Use CDN source for theme

Author: rossjrw

source/scp-3211/src/iframe.ejs.html

@@ -18,7 +18,7 @@
   );
   document.head.appendChild(
     Object.assign(document.createElement("link"), {
-      href: "https://scp-wiki.wikidot.com/component:theme/code/1",
+      href: "https://cdn.scpwiki.com/theme/en/sigma/css/sigma.min.css",
       rel: "stylesheet",
     })
   );