Fixes Grammar template folder position in the file create wizard form

Continuation of the jflex syntax coloring support ##8997 pull request

Set Grammar folder position to 1800 after XML as it has lower priority usage.

Author: haidubogdan

ide/languages.jflex/src/org/netbeans/modules/languages/jflex/resources/layer.xml

@@ -65,4 +65,10 @@
             </folder>
         </folder>
     </folder>
+    <folder name="Templates">
+        <folder name="Grammar">
+            <!--less priority than XML-->
+            <attr name="position" intvalue="1800"/>
+         </folder>
+    </folder>
 </filesystem>