The log message is already formatted before being passed to the colorer.
To avoid the exception "TypeError: not enough arguments for format
string", we should use the `nofmt_colorer` instead.
This bug occurs only when the formatted string still contains '%'
character. The following snippet can reproduce the bug:
```
from repo_logging import RepoLogger
RepoLogger(__name__).error("%s", "100% failed")
```
Change-Id: I4e3977b3d21aec4e0deb95fc1c6dd1e59272d695
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/432017
Tested-by: Shik Chen <shik@google.com>
Commit-Queue: Shik Chen <shik@google.com>
Reviewed-by: Mike Frysinger <vapier@google.com>
9bf8236c24