Fixed typo in robots.txt

public/robots.txt

@@ -54,7 +54,7 @@ Disallow: /*/*/settings
 Disallow: /*/*/raw/*
 Disallow: /*/*/wiki/_new
 Disallow: /*/*/wiki/*/_edit
-Disallow: /*/*/commits
+Disallow: /*/*/commit
 Disallow: /*/followers
 Disallow: /*/following
 Disallow: /*/*/src/*