[css2] Removed spoace from H1: before

--HG--
extra : convert_revision : svn%3A73dc7c4b-06e6-40f3-b4f7-9ed1dbc14bfc/trunk%401092

Author: bert-github

css2/generate.src

@@ -415,7 +415,7 @@ is 0.
 "Chapter 1", "1.1", "1.2", etc.
 
 <pre>
-H1: before {
+H1:before {
     content: "Chapter " counter(chapter) ". "
     counter-increment: chapter;  /* Add 1 to chapter */
     counter-reset: section;      /* Set section to 0 */