chore: fixing various typos

Merge https://github.com/google/adk-python/pull/4175

### Link to Issue or Description of Change

**1. Link to an existing issue (if applicable):**

N/A: just fixing typos discovered while reading the repo

**2. Or, if no issue exists, describe the change:**

No code change, just typo fixes: see commit diffs for all details

**Problem:**

Trying to improve overall repo quality

**Solution:**

Fixing typos as they get discovered

### Testing Plan

N/A

**Unit Tests:**

N/A

**Manual End-to-End (E2E) Tests:**

N/A

### Checklist

- [X] I have read the [CONTRIBUTING.md](https://github.com/google/adk-python/blob/main/CONTRIBUTING.md) document.
- [X] I have performed a self-review of my own code.
- [ ] I have commented my code, particularly in hard-to-understand areas.
- [ ] I have added tests that prove my fix is effective or that my feature works.
- [X] New and existing unit tests pass locally with my changes.
- [ ] I have manually tested my changes end-to-end.
- [ ] Any dependent changes have been merged and published in downstream modules.

COPYBARA_INTEGRATE_REVIEW=https://github.com/google/adk-python/pull/4175 from didier-durand:fix-typos-c 16e93ed2d9bc153fa0332ab1ae39633fcc5056e9
PiperOrigin-RevId: 858751240

AGENTS.md

@@ -24,7 +24,7 @@ agentic architectures that range from simple tasks to complex workflows.
     interacts with various services like session management, artifact storage,
     and memory, and integrates with application-wide plugins. The runner
     provides different execution modes: `run_async` for asynchronous execution
-    in production, `run_live` for bi-directional streaming interaction, and
+    in production, `run_live` for bidirectional streaming interaction, and
     `run` for synchronous execution suitable for local testing and debugging. At
     the end of each invocation, it can perform event compaction to manage
     session history size.

CHANGELOG.md

@@ -531,7 +531,7 @@
 * Set `max_output_tokens` for the agent builder ([2e2d61b](https://github.com/google/adk-python/commit/2e2d61b6fecb90cd474d6f51255678ff74b67a9b))
 * Set default response modality to AUDIO in run_session ([68402bd](https://github.com/google/adk-python/commit/68402bda49083f2d56f8e8488fe13aa58b3bc18c))
 * Update remote_a2a_agent to better handle streaming events and avoid duplicate responses ([8e5f361](https://github.com/google/adk-python/commit/8e5f36126498f751171bb2639c7f5a9e7dca2558))
-* Update the load_artifacts tool so that the model can reliably call it for follow up questions about the same artifact ([238472d](https://github.com/google/adk-python/commit/238472d083b5aa67551bde733fc47826ff062679))
+* Update the load_artifacts tool so that the model can reliably call it for follow-up questions about the same artifact ([238472d](https://github.com/google/adk-python/commit/238472d083b5aa67551bde733fc47826ff062679))
 * Fix VertexAiSessionService base_url override to preserve initialized http_options ([8110e41](https://github.com/google/adk-python/commit/8110e41b36cceddb8b92ba17cffaacf701706b36), [c51ea0b](https://github.com/google/adk-python/commit/c51ea0b52e63de8e43d3dccb24f9d20987784aa5))
 * Handle `App` instances returned by `agent_loader.load_agent` ([847df16](https://github.com/google/adk-python/commit/847df1638cbf1686aa43e8e094121d4e23e40245))
 
@@ -698,7 +698,7 @@
 * AgentTool returns last content, instead of the content in the last event [bcf0dda](https://github.com/google/adk-python/commit/bcf0dda8bcc221974098f3077007c9e84c63021a)
 * Fix adk deploy docker file permission [ad81aa5](https://github.com/google/adk-python/commit/ad81aa54de1f38df580915b7f47834ea8e5f1004)
 * Updating BaseAgent.clone() and LlmAgent.clone() to properly clone fields that are lists [29bb75f](https://github.com/google/adk-python/commit/29bb75f975fe0c9c9d9a7e534a9c20158e1cbe1e)
-* Make tool description for bigquery `execute_sql` for various write modes self contained [167182b](https://github.com/google/adk-python/commit/167182be0163117f814c70f453d5b2e19bf474df)
+* Make tool description for bigquery `execute_sql` for various write modes self-contained [167182b](https://github.com/google/adk-python/commit/167182be0163117f814c70f453d5b2e19bf474df)
 * Set invocation_id and branch for event generated when both output_schema and tools are used [3f3aa7b](https://github.com/google/adk-python/commit/3f3aa7b32d63cae5750d71bc586c088427c979ea)
 * Rework parallel_agent.py to always aclose async generators [826f554](https://github.com/google/adk-python/commit/826f5547890dc02e707be33a3d6a58b527dac223)
 * Add table metadata info into Spanner tool `get_table_schema` and fix the key usage info [81a53b5](https://github.com/google/adk-python/commit/81a53b53d6336011187a50ae8f1544de9b2764a8)

contributing/samples/bigquery_mcp/README.md

@@ -4,7 +4,7 @@
 
 This sample agent demonstrates using ADK's `McpToolset` to interact with
 BigQuery's official MCP endpoint, allowing an agent to access and execute
-toole by leveraging the Model Context Protocol (MCP). These tools include:
+tools by leveraging the Model Context Protocol (MCP). These tools include:
 
 
 1. `list_dataset_ids`

contributing/samples/context_offloading_with_artifact/README.md

@@ -32,7 +32,7 @@ response. This keeps the turn events small, saving context space.
     the *next* request to the LLM. This makes the report data available
     immediately, allowing the agent to summarize it or answer questions in the
     same turn, as seen in the logs. This artifact is only appended for that
-    round and not saved to session. For furtuer rounds of conversation, it will
+    round and not saved to session. For future rounds of conversation, it will
     be removed from context.
 3.  **Loading on Demand**: The `CustomLoadArtifactsTool` enhances the default
     `load_artifacts` behavior.

contributing/samples/mcp_stdio_notion_agent/README.md

@@ -1,6 +1,6 @@
 # Notion MCP Agent
 
-This is an agent that is using Notion MCP tool to call Notion API. And it demonstrate how to pass in the Notion API key.
+This is an agent that is using Notion MCP tool to call Notion API. And it demonstrates how to pass in the Notion API key.
 
 Follow below instruction to use it:
 

contributing/samples/oauth_calendar_agent/README.md

@@ -7,7 +7,7 @@ This sample tests and demos the OAuth support in ADK via two tools:
 *   1. list_calendar_events
 
     This is a customized tool that calls Google Calendar API to list calendar
-    events. It pass in the client id and client secrete to ADK and then get back
+    events. It passes in the client id and client secret to ADK and then get back
     the access token from ADK. And then it uses the access token to call
     calendar api.
 

src/google/adk/apps/app.py

@@ -43,7 +43,7 @@ class ResumabilityConfig(BaseModel):
   """The config of the resumability for an application.
 
   The "resumability" in ADK refers to the ability to:
-  1. pause an invocation upon a long running function call.
+  1. pause an invocation upon a long-running function call.
   2. resume an invocation from the last event, if it's paused or failed midway
   through.
 

src/google/adk/cli/adk_web_server.py

@@ -205,7 +205,7 @@ class RunAgentRequest(common.BaseModel):
   new_message: types.Content
   streaming: bool = False
   state_delta: Optional[dict[str, Any]] = None
-  # for resume long running functions
+  # for resume long-running functions
   invocation_id: Optional[str] = None
 
 

src/google/adk/flows/llm_flows/base_llm_flow.py

@@ -73,7 +73,7 @@ DEFAULT_ENABLE_CACHE_STATISTICS = False
 class BaseLlmFlow(ABC):
   """A basic flow that calls the LLM in a loop until a final response is generated.
 
-  This flow ends when it transfer to another agent.
+  This flow ends when it transfers to another agent.
   """
 
   def __init__(self):
@@ -393,8 +393,8 @@ class BaseLlmFlow(ABC):
         current_invocation=True, current_branch=True
     )
 
-    # Long running tool calls should have been handled before this point.
-    # If there are still long running tool calls, it means the agent is paused
+    # Long-running tool calls should have been handled before this point.
+    # If there are still long-running tool calls, it means the agent is paused
     # before, and its branch hasn't been resumed yet.
     if (
         invocation_context.is_resumable