fix maxRows comment, patch by dean_tessman@hotmail.com, r/sr=neil

xpfe/components/autocomplete/resources/content/autocomplete.xml

@@ -120,7 +120,7 @@
                 onset="this.setAttribute('timeout', val); return val;"
                 onget="var t = parseInt(this.getAttribute('timeout')); return t ? t : 0;"/>
 
-      <!-- number of milliseconds after a keystroke before a search begins -->
+      <!-- maximum number of rows to display -->
       <property name="maxRows"
                 onset="this.setAttribute('maxrows', val); return val;"
                 onget="var t = parseInt(this.getAttribute('maxrows')); return t ? t : 0;"/>