fix 'read the spec' link

Alex Langenfeld · Alex Langenfeld · commit 4ca49237b086 · 2015-09-15T17:56:51.000-07:00
diff --git a/site/index.html.js b/site/index.html.js
@@ -185,7 +185,7 @@ Product developers are free to focus on their client software and requirements w
             </a>
             <a
               className="button"
-              href={'spec/index.html'}>
+              href={'http://facebook.github.io/graphql/'}>
               Read the Spec
             </a>
           </div>
