chore: add 2 return type hints in update-user-guide-links.py

[travellingsoldier85]

Summary

Added concrete return type annotations to functions in content/bn/docs/update-user-guide-links.py based on static analysis of return statements.

Changes

• Add return type hint -> list to function
• Add return type hint -> str to function

Type of Change

• Code quality improvement (type hints)
• Bug fix
• New feature

Motivation

These type annotations are inferred from actual return values in the function bodies (e.g. return True → -> bool, return [] → -> list). They improve:

• IDE autocompletion and type checking (mypy/pyright)
• Code readability for contributors navigating the codebase
• Bug prevention via static analysis

No functional changes — only type annotations added.

[linux-foundation-easycla]

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[asem-hamid]

@travellingsoldier85 Thanks a lot for your contribution

It looks like the CLA (Contributor License Agreement) hasn’t been signed yet. Could you please complete that? It’s required for us to accept contributions. You should see a prompt/check in this PR to guide you.

Also, for documentation updates, we first make changes in the English (en) version, and then propagate those changes to other localized versions. So please ensure the update is applied in the en content first.

Once these are done, we can take another look. Thanks again for your contribution!

[Arhell]

/easycla