Fix for double header and footer on ndk download pages: b/27950742...

Fix for double header and footer on ndk download pages: b/27950742 https://android-dot-devsite.googleplex.com/ndk/downloads/index.html am: 01febb96 am: 9ba538ee am: 6e666024
am: bfe88888

* commit 'bfe88888':
  Fix for double header and footer on ndk download pages: b/27950742 https://android-dot-devsite.googleplex.com/ndk/downloads/index.html

Change-Id: I3578d2148e40f5056aa0370290c7170e2636ae7f