DOC: v0.2 Documention URL broken

[Dat LQ.]

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:

Hello,

Firstly, thank you for releasing version v0.2 of the software. It's greatly appreciated!

I've noticed an issue with the documentation links. Several pages intended for v0.2 are mistakenly pointing to v0.1, which leads to broken URLs. For example, the URL:
https://python.langchain.com/v0.2/v0.1/docs/expression_language/primitives/parallel/

This should likely be:
https://python.langchain.com/v0.1/docs/expression_language/primitives/parallel/

Suggested Solution:
The URL seems to mistakenly include both versions (v0.2 and v0.1). Removing the incorrect segment (v0.2) should resolve the issue.

Thank you for your attention to this matter!

Idea or request for content:

No response