[libstdc++,doc] Update link to Sun Studio 11: C++ Migration Guide

[Gerald Pfeifer]

Applied.

Gerald

2017-02-08  Gerald Pfeifer  <gerald@pfeifer.com>

	* doc/xml/manual/abi.xml: Update link to "Sun Studio 11: C++
	Migration Guide".

Index: doc/xml/manual/abi.xml
===================================================================
--- doc/xml/manual/abi.xml	(revision 245252)
+++ doc/xml/manual/abi.xml	(working copy)
@@ -1144,7 +1144,7 @@
   <biblioentry>
       <title>
 	<link xmlns:xlink="http://www.w3.org/1999/xlink"
-	      xlink:href="http://download.oracle.com/docs/cd/E19422-01/819-3689/index.html">
+	      xlink:href="http://docs.oracle.com/cd/E19422-01/819-3689/">
       Sun Studio 11: C++ Migration Guide (document 819-3689)
 	</link>
       </title>