chore: fix typos in multiple files

Merge https://github.com/google/adk-python/pull/2864

**Reason for this change:**

  Multiple typos were found in comments, docstrings, and code throughout the codebase, which could lead to confusion and reduce code readability.

  **Changes made:**

  Fixed the following typos across 8 files:

  1. contributing/samples/adk_answering_agent/utils.py:130: "extention" → "extension"
  2. llms-full.txt:15171: "fuction" → "function"
  3. src/google/adk/a2a/converters/part_converter.py:
    - Line 96: "Conver" → "Convert", "reponse" → "response"
    - Line 99: "suervice" → "service"
    - Line 100: "accordinlgy" → "accordingly"
    - Line 191: "Conver" → "Convert", "reponse" → "response"
    - Line 195: "accordinlgy" → "accordingly"
  4. src/google/adk/agents/base_agent.py:568: "custome" → "custom"
  5. src/google/adk/evaluation/agent_evaluator.py:572: "Retruns" → "Returns"
  6. src/google/adk/flows/llm_flows/basic.py:55: "outoput_schema" → "output_schema"
  7. src/google/adk/flows/llm_flows/contents.py:136: "fuction_response" → "function_response"
  8. src/google/adk/models/google_llm.py:138: "gemini_llm_connecton.py" → "gemini_llm_connection.py"

  **Impact:**

  This change will:
  - Improve code documentation clarity and professionalism
  - Make comments, docstrings, and code more readable and accurate
  - Help prevent confusion for developers reading the code
  - Ensure consistency in terminology throughout the codebase

  This is a non-breaking change that only affects comments, documentation strings, and improves code clarity.

COPYBARA_INTEGRATE_REVIEW=https://github.com/google/adk-python/pull/2864 from ammmr:chore-fix-typos 3cea9fcf6f21edb006b63e9258d2b82930dd961d
PiperOrigin-RevId: 805227784

contributing/samples/adk_answering_agent/utils.py

@@ -127,7 +127,7 @@ def convert_gcs_to_https(gcs_uri: str) -> Optional[str]:
       # Use the directory path if it is a index file
       final_path_segment = os.path.dirname(path_after_docs)
     else:
-      # Otherwise, use the file name without extention
+      # Otherwise, use the file name without extension
       final_path_segment = path_after_docs.removesuffix(".md")
 
     if final_path_segment and not final_path_segment.endswith("/"):

llms-full.txt

@@ -15168,7 +15168,7 @@ Agent client received an event with long running function calls and check the st
                     return part.function_call
 
         def get_function_response(event: Event, function_call_id: str) -> types.FunctionResponse:
-            # Get the function response for the fuction call with specified id.
+            # Get the function response for the function call with specified id.
             if not event.content or not event.content.parts:
                 return
             for part in event.content.parts:

src/google/adk/a2a/converters/part_converter.py

@@ -93,11 +93,11 @@ def convert_a2a_part_to_genai_part(
       return None
 
   if isinstance(part, a2a_types.DataPart):
-    # Conver the Data Part to funcall and function reponse.
+    # Convert the Data Part to funcall and function response.
     # This is mainly for converting human in the loop and auth request and
     # response.
-    # TODO once A2A defined how to suervice such information, migrate below
-    # logic accordinlgy
+    # TODO once A2A defined how to service such information, migrate below
+    # logic accordingly
     if (
         part.metadata
         and _get_adk_metadata_key(A2A_DATA_PART_METADATA_TYPE_KEY)
@@ -188,11 +188,11 @@ def convert_genai_part_to_a2a_part(
 
     return a2a_types.Part(root=a2a_part)
 
-  # Conver the funcall and function reponse to A2A DataPart.
+  # Convert the funcall and function response to A2A DataPart.
   # This is mainly for converting human in the loop and auth request and
   # response.
   # TODO once A2A defined how to suervice such information, migrate below
-  # logic accordinlgy
+  # logic accordingly
   if part.function_call:
     return a2a_types.Part(
         root=a2a_types.DataPart(

src/google/adk/agents/base_agent.py

@@ -565,7 +565,7 @@ class BaseAgent(BaseModel):
   ) -> Dict[str, Any]:
     """Parses the config and returns updated kwargs to construct the agent.
 
-    Sub-classes should override this method to use a custome agent config class.
+    Sub-classes should override this method to use a custom agent config class.
 
     Args:
       config: The config to parse.

src/google/adk/evaluation/agent_evaluator.py

@@ -569,7 +569,7 @@ class AgentEvaluator:
   def _get_eval_metric_results_with_invocation(
       eval_results_per_eval_id: list[EvalCaseResult],
   ) -> dict[str, list[_EvalMetricResultWithInvocation]]:
-    """Retruns _EvalMetricResultWithInvocation grouped by metric.
+    """Returns _EvalMetricResultWithInvocation grouped by metric.
 
     EvalCaseResult contain results for each metric per invocation.
 

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

@@ -52,7 +52,7 @@ class _BasicLlmRequestProcessor(BaseLlmRequestProcessor):
     )
     # Only set output_schema if no tools are specified. as of now, model don't
     # support output_schema and tools together. we have a workaround to support
-    # both outoput_schema and tools at the same time. see
+    # both output_schema and tools at the same time. see
     # _output_schema_processor.py for details
     if agent.output_schema and not agent.tools:
       llm_request.set_output_schema(agent.output_schema)

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

@@ -133,7 +133,7 @@ def _rearrange_events_for_latest_function_response(
 
   function_responses = events[-1].get_function_responses()
   if not function_responses:
-    # No need to process, since the latest event is not fuction_response.
+    # No need to process, since the latest event is not function_response.
     return events
 
   function_responses_ids = set()

src/google/adk/models/google_llm.py

@@ -135,7 +135,7 @@ class Gemini(BaseLlm):
           config=llm_request.config,
       )
 
-      # for sse, similar as bidi (see receive method in gemini_llm_connecton.py),
+      # for sse, similar as bidi (see receive method in gemini_llm_connection.py),
       # we need to mark those text content as partial and after all partial
       # contents are sent, we send an accumulated event which contains all the
       # previous partial content. The only difference is bidi rely on