This fixes 11 of 12 complaints by make check, but there is still one I don't know what to do with:

PS devguide> .\make check
[2] .\gitbootcamp.rst:282: default role used
1 problem with severity 2 found.

I think this last is a false alarm, but there doesn't seem to be any escaping it short of change to rstlint.py to recognise literal blocks. The offending item is the command nested with backticks in:

$ git checkout `git rev-list -n 1 --before="yyyy-mm-dd hh:mm:ss" master`