Fix duplicate vertical-align property in wiki_syntax.css (#37983).

Patch by Go MAEDA.


git-svn-id: https://svn.redmine.org/redmine/trunk@21972 e93f8b46-1217-0410-a6f0-8f06a7374b81

public/help/wiki_syntax.css

@@ -2,7 +2,7 @@ h1 { font-family: Verdana, sans-serif; font-size: 14px; text-align: center; colo
 body { font-family: Verdana, sans-serif; font-size: 12px; color: #444; }
 pre, code {font-family: Consolas, Menlo, "Liberation Mono", Courier, monospace; }
 table th { padding-top: 1em; }
-table td { vertical-align: top; background-color: #f5f5f5; height: 2em; vertical-align: middle;}
+table td { background-color: #f5f5f5; height: 2em; vertical-align: middle;}
 table td code { font-size: 1.2em; }
 table td h1 { font-size: 1.8em; text-align: left; }
 table td h2 { font-size: 1.4em; text-align: left; }