trivial: Fix HACKING.rst nits causing rendering issues

Currently the HACKING.rst documentation is published here:
https://docs.openstack.org/patrole/latest/HACKING.html

And it is apparent that underneath the [0] section that
some of the hacking checks are incorrectly formatted
like [T109]. This fixes those issues.

[0] https://docs.openstack.org/patrole/latest/HACKING.html#patrole-specific-commandments

Change-Id: I306e972b23bc35672e8ef723bd5bc50f2f897882
1 file changed