Remove superfluous text

Author: gowpen

README.md

@@ -1,6 +1,6 @@
 # sevenrules
 
-Validates the format a git commit message against [The seven rules of a great Git commit message](https://chris.beams.io/posts/git-commit/#seven-rules):
+Validates a git commit message against [The seven rules](https://chris.beams.io/posts/git-commit/#seven-rules):
 
 1. **Separate subject from body with a blank line**
 1. **Limit the subject line to 72 characters**