Mention basebackup-from-slave next to cascading replication

doc/src/sgml/release-9.2.sgml

@@ -52,6 +52,13 @@
        </para>
       </listitem>
 
+      <listitem>
+       <para>
+        Allow <application>pg_basebackup</> to make base backups from
+        standby servers
+       </para>
+      </listitem>
+
       <listitem>
        <para>
         Add a <link
@@ -1230,8 +1237,8 @@
 
       <listitem>
        <para>
-        Allow <application>pg_basebackup</> to pull from standby servers
-        (Jun Ishizuka, Fujii Masao)
+        Allow <application>pg_basebackup</> to make base backups from
+        standby servers (Jun Ishizuka, Fujii Masao)
        </para>
       </listitem>