Formatting.py: Fix typo
Formatting.py: Fix typo

This fixes the typo and changes it from 'the of rules' --> 'the rules'.

Closes https://github.com/coala/coala/issues/5922

SanketDG/coala,coala/coala,coala-analyzer/coala,jayvdb/coala,jayvdb/coala,coala-analyzer/coala,jayvdb/coala,SanketDG/coala,coala/coala,SanketDG/coala,coala-analyzer/coala,coala/coala