Update description.html

Author: JanSlabon

public/demos/6-Stamper/3-various/5-tagged-stamp/description.html

@@ -8,7 +8,7 @@
     pass this as the <code>$parentId</code> parameter of the constructor.
 </p>
 <p>
-    If no individual tag should be created but the one that is resolved by the <code>$parentId</code>, you
+    If no individual tag should be created but the one that is resolved by the <code>$parentId</code> should be used, you
     have to set the tag-name to <i>null</i>: <code>$stamp->setTagName(null);</code><br />
     <b>NOTE: Such stamp can only appear on a single page!</b>
 </p>