docs: update gms auth docs for bug 7737187

Change-Id: I32c39bbe39ff7d84ea88aeac2ca11a0110700266
diff --git a/docs/html/google/google_toc.cs b/docs/html/google/google_toc.cs
index b2051d1..8611534 100644
--- a/docs/html/google/google_toc.cs
+++ b/docs/html/google/google_toc.cs
@@ -23,7 +23,7 @@
       </li>
 
       <li><a href="<?cs var:toroot?>google/play-services/auth.html">
-          <span class="en">Authentication</span></a>
+          <span class="en">Authorization</span></a>
       </li>
 
       <li><a href="<?cs var:toroot?>google/play-services/plus.html">