fix documented list of supported shell completions

complete/src/lib.rs

@@ -76,6 +76,6 @@ pub fn render(c: &Command, shell: &str) -> String {
         "nu" | "nushell" => nu::render(c),
         "man" => man::render(c),
         "sh" | "bash" | "csh" | "elvish" | "powershell" => panic!("shell '{shell}' completion is not implemented yet!"),
-        _ => panic!("unknown option '{shell}'! Expected one of: \"md\", \"fish\", \"zsh\", \"man\", \"sh\", \"bash\", \"csh\", \"elvish\", \"powershell\""),
+        _ => panic!("unknown option '{shell}'! Expected one of: \"md\", \"fish\", \"zsh\", \"nu[shell]\", \"man\", \"sh\", \"bash\", \"csh\", \"elvish\", \"powershell\""),
     }
 }

docs/guide/completions.md

@@ -33,7 +33,7 @@ Shell completions and documentation can be generated automatically by this crate
 cargo run --features parse-is-complete -- [shell]
 ```
 
-The `[shell]` value here can be `fish`, `zsh`, `bash`, `powershell`, `elvish` or `nu`.
+The `[shell]` value here can be `fish`, `zsh`, `nu`, `sh`, `bash`, `csh`, `elvish`, or `powershell`.
 
 > **Note**: Some of these remain unimplemented as of writing.
 
@@ -47,4 +47,4 @@ If you do not want to hijack the [`Options::parse`](crate::Options::parse) funct
 [Up](super)
 [Next]()
 
-</div>
+</div>