Fix grammar.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95719 91177308-0d34-0410-b5e6-96231b3b80d8

www/analyzer/filing_bugs.html

@@ -48,7 +48,7 @@ component.</p>
 reports to Apple's <a href="http://bugreporter.apple.com">Bug Reporter</a> web
 site.</p>
 
-<p>You are free to always file bugs through this website, but this option less
+<p>You are free to always file bugs through this website, but this option is less
 attractive than filing bug reports through Bugzilla as not everyone who works on
 the analyzer has access to that bug database.</p>