add grok

_layouts/default.html

@@ -1863,7 +1863,7 @@
                 <div class="grok-mode-dropdown" style="display: none;">
                   <div class="grok-mode-option" data-url="https://grok.com/chat?">Grok</div>
                   <div class="grok-mode-option" data-url="https://grok.com/chat?reasoningMode=deepsearch">Grok Deep Search</div>
-                  <div class="grok-mode-option" data-url="https://grok.com/chat?reasoningMode=thinking">Grok Thinking</div>
+                  <div class="grok-mode-option" data-url="https://grok.com/chat?reasoningMode=think">Grok Thinking</div>
                 </div>
               </div>
               <button class="platform-tag" data-platform="claude" data-url="https://claude.ai/new">Claude</button>