Update links to google-cloud-node and google-cloud-php landing pages (#1192)

Author: mziccard

src/site/resources/index.html

@@ -35,13 +35,13 @@ <h1 class="logo"><img src="img/logo-full.svg" alt="Google Cloud Platform" /></h1
                         </a>
                     </li>
                     <li>
-                        <a href="https://googlecloudplatform.github.io/gcloud-node/" title="Node.js docs page">
+                        <a href="https://googlecloudplatform.github.io/google-cloud-node/" title="Node.js docs page">
                             <img src="img/icon-lang-nodejs.svg" alt="Node.js icon" class="menu-icon" />
                             Node.js
                         </a>
                     </li>
                     <li>
-                        <a href="https://googlecloudplatform.github.io/gcloud-php/" title="PHP docs page">
+                        <a href="https://googlecloudplatform.github.io/google-cloud-php/" title="PHP docs page">
                             <img src="img/icon-lang-php.svg" alt="PHP icon" class="menu-icon" />
                             PHP
                         </a>