Remove . from path to injectDonateButton.js, as suggested by Chris.

Author: CartBlanche

templates/monogame/layout/_master.tmpl

@@ -78,7 +78,7 @@
     {{/_enableSearch}}
 
       {{>partials/footer}}
-      <script type="text/javascript" src="./public/injectDonateButton.js" /
+      <script type="text/javascript" src="/public/injectDonateButton.js" /
   </body>
 {{/redirect_url}}
 </html>