[wwwdocs] Fix <a href> vs <a name> confusion in codingrationale.html

[Gerald Pfeifer]

That was an interesting one to find and understand: this was not
supposed to be a link, but setting of an anchor.

Fix <a href> vs <a name> confusion in codingrationale.html; applied.

Gerald

Index: codingrationale.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/codingrationale.html,v
retrieving revision 1.1
diff -u -3 -p -r1.1 codingrationale.html
--- codingrationale.html	16 Jul 2012 19:51:44 -0000	1.1
+++ codingrationale.html	6 Sep 2012 02:52:54 -0000
@@ -348,7 +348,7 @@ but the clarity in layout persists.
 
 <h3>Formatting Conventions</h3>
 
-<h4><a href="names">Names</a></h4>
+<h4><a name="names">Names</a></h4>
 
 <p>
 Naming data members with a trailing underscore