Correction to example variable name

specifications/xpath-functions-40/src/xpath-functions.xml

@@ -9461,7 +9461,7 @@ return <table>
                   (see <xspecref spec="XQ40" ref="id-xquery-for-clause"/> and 
                   <xspecref spec="XP40" ref="id-for-expressions"/>).</p></item>
 
-               <item><p>Arrays can be filtered using the construct <code>$map?[<var>predicate</var>]</code>
+               <item><p>Arrays can be filtered using the construct <code>$array?[<var>predicate</var>]</code>
                (see <xspecref spec="XP40" ref="id-filter-maps-and-arrays"/>).</p></item>
            </ulist>