Upgrade Docsy to v0.10.0-33-gfe0d785, add rtlcss pkg

[chalin]

• Contributes to #295
• Preview: https://deploy-preview-322--goldydocs.netlify.app/fa/docs/

How this PR was prepared

• go.mod: edit the following line adding the desired docsy commit hash, and tag description require github.com/google/docsy <docsy-commit-hash> // indirect - v0.10.0-<tag-desc>
• Run npx hugo mod get

Screenshot

Illustrates that the top-nav and footer are better than ever, in particular that the following have been fixed:

• https://github.com/google/docsy/issues/2005
• https://github.com/google/docsy/issues/2011

Contrast this with the previous iteration, via #305:

• https://deploy-preview-305--goldydocs.netlify.app/fa/docs/

[chalin]

@theletterf - can PTAL

[chalin]

Merging now. @theletterf - feedback is still welcome.

[theletterf]

FWIW it looks good to me!

Could the feedback feature get translated?

[chalin]

FWIW it looks good to me!

Thank you!

Could the feedback feature get translated?

Yes, I've been waiting for a kind soul to submit a PR for https://github.com/google/docsy/issues/2019 😄