docs: update CouchDB Mango documentation link (moved in 3.5)

[Mayankaggarwal8055]

CouchDB moved the Mango (_find) documentation page in version 3.5 from:

https://docs.couchdb.org/en/stable/api/database/find.html

to:

https://docs.couchdb.org/en/stable/ddocs/mango.html

This PR updates the link in docs/_guides/mango-queries.md
to reference the current stable documentation.

Fixes #9083

[alxndrsn]

Should the link text also change? Would it be useful to also keep a link to the couchdb _find docs?

[Mayankaggarwal8055]

Good point. I’ll update the link text to match the new Mango documentation page and also add a reference to the _find API docs for completeness. Thanks for the suggestion!

[Mayankaggarwal8055]

I've updated the link text to refer to the CouchDB Mango documentation and added a reference to the _find API docs as suggested. Please let me know if any further changes are needed.

[Mayankaggarwal8055]

Hi @janl @SCdF @alxndrsn ,

This PR updates the CouchDB Mango documentation link that moved in CouchDB 3.5.

I’ve also updated the link text and added a reference to the _find API docs following the suggestion from @alxndrsn.

Whenever you have a moment, I’d appreciate it if you could take a quick look. Thanks!

[alxndrsn]

Hi @janl @SCdF @alxndrsn ,

Please don't tag me in comments unless specifically relevant.

[Mayankaggarwal8055]

Hey @janl , could you please take a look at this when you have some time?

This PR updates the outdated CouchDB Mango documentation link (moved in 3.5), and also adjusts the link text while adding a reference to the _find API docs for completeness based on earlier feedback.

Everything is aligned with the current docs now. Let me know if you’d like any further tweaks.

Thanks!