add xyongcn to comment admin

Author: wyfcyx

extensions/comment/gitalk.html

@@ -7,7 +7,7 @@
   "clientSecret": "4760b384e3e452d2241d859cfa6a7da21a8729ec",
   "repo": "rCore_tutorial_doc",
   "owner": "rcore-os",
-  "admin": ["wyfcyx","chyyuu","equation314","wangrunji0408","PanQL","xy-plus"],
+  "admin": ["wyfcyx","chyyuu","equation314","wangrunji0408","PanQL","xyongcn"],
   "id": location.pathname,      
   "distractionFreeMode": false  
 });