add 'vary=2' to knock forward caching on the js files

Author: mcmonkey4eva

short_example/index.html

@@ -146,7 +146,7 @@ <h4>Prompt Replacements</h4>
             <br>Made using the <a href="https://bootswatch.com/darkly/">Darkly Bootstrap Theme</a> by Thomas Park, which was released under the <a href="https://github.com/thomaspark/bootswatch/blob/95df99d76147797cbcb1014b639805add2327f65/LICENSE">MIT License</a>.
         </center>
     </footer>
-    <script src="data.js"></script>
-    <script src="proc.js"></script>
+    <script src="data.js?vary=2"></script>
+    <script src="proc.js?vary=2"></script>
     <script src="bootstrap.bundle.min.js"></script>
 </body>