Fix transposed digits in LWG issue number (as noted by Jonathan)

Author: Dani-Hub

xml/issue2562.xml

@@ -40,7 +40,7 @@ is defined</p></li>
 <p>
 Consistent semantics for the various comparison functors and the built-in operators is so intuitive as to be assumed by most programmers.
 <p/>
-Related issues: <iref ref="2450"/>, <iref ref="2457"/>.
+Related issues: <iref ref="2450"/>, <iref ref="2547"/>.
 </p>
 </discussion>