Update script.js

Fix annoying spaces in two letter prefixes

assets/js/script.js

@@ -2,7 +2,7 @@
  * Evening Startpage
  * Inspired by https://github.com/jeroenpardon/sui
  * You can find it at https://github.com/TB-96/Evening-Startpage
- * Made by TB-96 2020
+ * Made by TB-96 2021
  *
  */
 
@@ -99,7 +99,7 @@ document.onkeypress = (e) => {
 
       if (e.key == 'Enter') {
         if (prefix.indexOf('!') == 0)
-          (engine = engines[prefix.substr(1)][0], str = 3);
+          (engine = engines[prefix.substr(1)][0], str = prefix.length + 1);
 
         window.location = engine + args.join(' ').substr(str).toString().replace(/\s+/m, '%20');
       } else if (e.keyCode == 27)