DOC: Debugging guide missing for v0.3

[3coins]

URL

https://python.langchain.com/api_reference/core/runnables/langchain_core.runnables.base.Runnable.html/#debugging-and-tracing

Checklist

• I added a very descriptive title to this issue.
• I included a link to the documentation page I am referring to (if applicable).

Issue with current documentation:

Debugging and tracing guide is missing in the v0.3 documentation even though the search bar on the top does bring up the linked page. Has this moved to a different location, if so, can it be linked correctly.

Idea or request for content:

Reinstate the debugging guide from v0.1 or correct the search so it links the existing debugging guide on v0.3.