Make release notes aware that --xlog-method was renamed

Author: David G. Johnston
Discussion: https:/postgr.es/m/CAKFQuwaCsb-OKOjQXGeN0R7byxiRWvr7OtyKDbJoYgiF2vBG4Q@mail.gmail.com

doc/src/sgml/release-10.sgml

@@ -242,7 +242,7 @@
 
      <para>
       This changes <application>pg_basebackup</application>'s
-      <option>-X</option>/<option>--xlog-method</option> default to <literal>stream</literal>.
+      <option>-X</option>/<option>--wal-method</option> default to <literal>stream</literal>.
       An option value <literal>none</literal> has been added to reproduce the old
       behavior.  The <application>pg_basebackup</application> option <option>-x</option>
       has been removed (instead, use <literal>-X fetch</literal>).