Fix typo in violations_reporter.py
Fix typo in violations_reporter.py

mblayman/diff-cover,Bachmann1234/diff-cover,Bachmann1234/diff-cover,mblayman/diff-cover,ezequielo/diff-cover,benpatterson/diff-cover,benpatterson/diff-cover,ezequielo/diff-cover,edx/diff-cover,hugovk/diff-cover