[Doc] Adjust RunLLM location (#10176)

Signed-off-by: DarkLight1337 <tlleungac@connect.ust.hk>

docs/source/_static/custom.js

@@ -8,7 +8,7 @@ document.addEventListener("DOMContentLoaded", function () {
     script.setAttribute("version", "stable");
     script.setAttribute("runllm-keyboard-shortcut", "Mod+j"); // cmd-j or ctrl-j to open the widget.
     script.setAttribute("runllm-name", "vLLM");
-    script.setAttribute("runllm-position", "BOTTOM_LEFT");
+    script.setAttribute("runllm-position", "TOP_RIGHT");
     script.setAttribute("runllm-assistant-id", "207");
   
     script.async = true;