Tweak h1 line-height to avoid text overlay issues in the headers.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@52256 91177308-0d34-0410-b5e6-96231b3b80d8

www/content.css

@@ -3,7 +3,7 @@ html, body {
   font: 12px/18px "Lucida Grande", "Lucida Sans Unicode", Arial, Verdana, Helvetica, sans-serif; background-color: #fff; color: #222;
 }
 
-h1, h2, h3, tt { color: #000; }
+h1, h2, h3, tt { color: #000; line-height:1.1; }
 
 h2 { padding-top: 1em; }
 h3 { padding-top: 0.5em; margin-bottom: -0.25em; }