Update .agents/skills/new-client-library-generator/references/generation_guide.md

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Author: lqiu96

.agents/skills/new-client-library-generator/references/generation_guide.md

@@ -30,7 +30,7 @@ file as an example.
 
 
 :warning: **IMPORTANT:**
-Not all the `new-client.py` arguments are available in the Github Action.
+Not all the add-new-client-config.py arguments are available in the Github Action.
 Please refer to
 [this
 section](/generation/new_client_hermetic_build/README.md#advanced-options)