Custom Tools documentation issue: args_schema should be args_json_schema

[wooters]

Describe the bug

There is a small documentation issue in the Guides and Concepts section of the documentation.

In the Tools -> Custom Tools page (under "STATEFUL AGENTS"), there is a section called Specifying tools via Pydantic models, where it says to use args_schema to provide the definition of the args for your tool. I think it should actually be args_json_schema.

[github-actions]

This issue is stale because it has been open for 30 days with no activity.