Fix incorrect @headername Doxygen macro invocation.

Format is @headername{hdr1,hdr2} not @headername{hdr1 or hdr2}.

2012-11-27  Ollie Wild  <aaw@google.com>

	* include/bits/stl_tree.h (@headername): Fix incorrect Doxygen macro
	invocation.

From-SVN: r193869

libstdc++-v3/ChangeLog

+2012-11-27  Ollie Wild  <aaw@google.com>
+
+	* include/bits/stl_tree.h (@headername): Fix incorrect Doxygen macro
+	invocation.
+
 2012-11-26  Jonathan Wakely  <jwakely.gcc@gmail.com>
 
 	* include/std/functional (__is_socketlike): Change from class

libstdc++-v3/include/bits/stl_tree.h

@@ -54,7 +54,7 @@
 
 /** @file bits/stl_tree.h
  *  This is an internal header file, included by other library headers.
- *  Do not attempt to use it directly. @headername{map or set}
+ *  Do not attempt to use it directly. @headername{map,set}
  */
 
 #ifndef _STL_TREE_H