Merge branch 'master' of github.com:D-Programming-Language/d-programming-language.org

Author: WalterBright

std.ddoc

@@ -128,7 +128,7 @@ PAGE_TOOLS=
 			local clone.
 		</span>
 	</a>
-	<a href="http://www.prowiki.org/wiki4d/wiki.cgi?DocComments/$(WIKI)" class="button">
+	<a href="http://www.prowiki.org/wiki4d/wiki.cgi?DocComments/$(WIKI)" class="tip button">
 		Page wiki
 		<span>
 	        View or edit the community-maintained wiki page associated with this page.