Fix incorrect DR numbers in libstdc++ manual

	* doc/xml/manual/intro.xml: Fix DR 2537 and DR 2566 confusion.

From-SVN: r270954

libstdc++-v3/ChangeLog

+2019-05-07  Jonathan Wakely  <jwakely@redhat.com>
+
+	* doc/xml/manual/intro.xml: Fix DR 2537 and DR 2566 confusion.
+
 2019-05-01  Nina Dinka Ranns  <dinka.ranns@gmail.com>
 
 	Make allocator propagation more consistent for

libstdc++-v3/doc/xml/manual/intro.xml

@@ -1121,18 +1121,18 @@ requirements of the license of GCC.
     </para></listitem></varlistentry>
 
     <varlistentry xml:id="manual.bugs.dr2537"><term><link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="&DR;#2537">2537</link>:
-       <emphasis>Requirements on the first template parameter of container adaptors
+       <emphasis>Constructors for <code>priority_queue</code> taking allocators
+	 should call <code>make_heap</code>
        </emphasis>
     </term>
-    <listitem><para>Add static assertions to enforce the requirement.
+    <listitem><para>Call <code>make_heap</code>.
     </para></listitem></varlistentry>
 
     <varlistentry xml:id="manual.bugs.dr2566"><term><link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="&DR;#2566">2566</link>:
-       <emphasis>Constructors for <code>priority_queue</code> taking allocators
-	 should call <code>make_heap</code>
+       <emphasis>Requirements on the first template parameter of container adaptors
        </emphasis>
     </term>
-    <listitem><para>Call <code>make_heap</code>.
+    <listitem><para>Add static assertions to enforce the requirement.
     </para></listitem></varlistentry>
 
     <varlistentry xml:id="manual.bugs.dr2583"><term><link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="&DR;#2583">2583</link>: