Update contribute.html

Author: none-None1

contribute.html

@@ -35,6 +35,7 @@ <h3>I want a new esolang/feature</h3>
         </pre>
         <code>script</code> tags should be sorted by their sources, in lexicographical order, just like the <code>option</code> tags.
         <li>Finally, add the link to the language in the README.md file and add a row for this language in the about.html file, and update the number of languages and the version number.</li>
+        Please do <b>NOT</b> do anything else or you'll mess up the repository!
        </p>
     </body>
-</html>
+</html>