13.0R/relnotes: Add entries for changes that happened in bhyve.

[debdrup]

Summary

While here, implement a template for cgit links called 'commit' for lack of a better term.

This fixes the only build issue with this patch, and has been tested in Firefox with the run target as well.

Test Plan

make run and Firefox

[gjb]

On cursory look, I see no other problems than what is outlined in-line. Once fixed, please go ahead.

website/content/en/releases/13.0R/relnotes.adoc

166

s/section s/sections/

175

I think “{}” may be a typo.

[debdrup]

Address feedback by @gjb

The problem is, I can't commit this without breaking the build, because
the 'commit' keyword isn't defined anywhere.

So someone needs to do that first, and I ended up getting so absorbed in
this that I stayed awake until 6 in the morning, so I can't figure out
how.

[debdrup]

Add commit template which fixes the build and adds links to the commits.

I've tested this with the run target and Firefox.

[debdrup]

This landed as r9:5476df4, but I forgot a Differential revision field.