The help text for the GitHub access token was sticking a <strong> next

to a <code>, which ended up collapsing the space in between them. This

change simplifies the text a bit and gets rid of the <strong>, since it

doesn't really help and IMO just makes it harder to read.
This also adds some <code> tags to the example URLs for account/org/repo

names in the repository part of the form.

Loaded the form for a GitHub repo and saw that the help text all looked

nice.