Test new `mdbook` right-to-left rendering

[mgeisler]

With rust-lang/mdBook#1641 merged, we can now test out the right-to-left rendering.

We should

1. Update mdbook to use a version from Git (edit .github/workflows/install-mdbook/action.yml).
2. Enable publication for Persian translation #671.
3. Ensure that Persian is rendered nicely (ask @mbpouri and @DannyRavi for input).

[DannyRavi]

It seems that there is a problem with Hyperlinks markdown in RTL mode.

and

Also, few translations into Farsi have been done and I will try to finish the continuation of translations into Farsi soon.

[mgeisler]

Hi @DannyRavi, thanks for testing it!

I looked into this case and the problem is actually that the link is escaped in the fa.po file. That should be fixed with a normal edit.

I tried editing fa.po a bit locally and I was able to get links working, both with English and Persian text.

Did you see any big problems in the layout or is this looking correct? To me, it looks nicely mirrored, but I'm not sure what I should look for 🙂

[DannyRavi]

Hi @mgeisler. thanks for solving it!
Now I see no issues with RTL and rendering and everything looks great.