Fix gitalk issue

Author: halfrost

website/themes/book/layouts/partials/docs/gitalk.html

@@ -12,7 +12,8 @@
     admin: ['{{ .Site.Params.Gitalk.owner }}'],
     id: md5(location.pathname), // Ensure uniqueness and length less than 50
     distractionFreeMode: false, // Facebook-like distraction free mode
-    body: location.href // GitHub issue body.
+    body: location.href, // GitHub issue body.
+    proxy: '{{ .Site.Params.Gitalk.proxy }}' // Gitalke proxy
   });
   (function() {
     if (["localhost", "127.0.0.1"].indexOf(window.location.hostname) != -1) {