[libstdc++,doc] doc/xml/manual/support.xml - link adjustment and simplification

[Gerald Pfeifer]

The links adjustment I would just have committed right away, but
I'd also like to suggest swe simplify the section: the following
paragraph doesn't really add much, but duplicates the external
link.

Thoughts?

Gerald

2019-05-26  Gerald Pfeifer  <gerald@pfeifer.com>

	* doc/xml/manual/support.xml: Adjust link to www.aristeia.com.
	Shorten the section a bit.

Index: doc/xml/manual/support.xml
===================================================================
--- doc/xml/manual/support.xml	(revision 271632)
+++ doc/xml/manual/support.xml	(working copy)
@@ -170,7 +170,7 @@
     </para>
 
     <para>In his book <link xmlns:xlink="http://www.w3.org/1999/xlink"
-      xlink:href="http://www.aristeia.com/books.html"><emphasis>Effective
+      xlink:href="https://www.aristeia.com/books.html"><emphasis>Effective
       C++</emphasis></link>, Scott Meyers points out that the best way
     to solve this problem is to not overload on pointer-vs-integer
     types to begin with.  He also offers a way to make your own magic
@@ -177,11 +177,6 @@
     <constant>NULL</constant> that will match pointers before it
     matches integers.
     </para>
-    <para>See the
-      <link xmlns:xlink="http://www.w3.org/1999/xlink"
-      xlink:href="http://www.aristeia.com/books.html"><emphasis>Effective
-      C++ CD</emphasis></link> example.
-    </para>
   </section>
 
 </section>