gh: Increase the maximum word limit for commit message body

[Tim-Zhang]

The original limit 72 was too strict to follow.

[qwandor]

Wrapping at 72 columns is fairly standard for git commit messages, it doesn't seem like a big issue to me. Is there something you can't wrap?

[jalil-salame]

Wrapping at 72 columns is fairly standard for git commit messages, it doesn't seem like a big issue to me. Is there something you can't wrap?

I usually come across the limit (in other repos) when adding a link for context as they easily go over 72 characters.