Update bazel.io references to bazel.build (#65)

Author: jin

site/docs/faq.md

@@ -12,7 +12,7 @@ suggest using the `dict(a.items() + b.items())` syntax instead.
 
 [dict-op]: https://github.com/bazelbuild/bazel/issues/1086
 
-## Is Skydoc used to generate the documentation on [Bazel.io](https://bazel.build)?
+## Is Skydoc used to generate the documentation on [bazel.build](https://bazel.build)?
 
 Not for now. The [Build Encyclopedia](https://bazel.build/docs/be/overview.html)
 documents the set of native Bazel build rules written in Java, and the

skydoc/templates/html_footer.jinja

@@ -20,7 +20,7 @@ limitations under the License.
           <div class="mdl-mini-footer__left-section">
             <div class="mdl-logo">Bazel</div>
             <ul class="mdl-mini-footer__link-list">
-              <li><a href="http://bazel.io">Home</a></li>
+              <li><a href="https://bazel.build">Home</a></li>
               <li><a href="https://github.com/bazelbuild">GitHub</a></li>
             </ul>
           </div>