fix redirects, as per linkchecker cl: https://critique.corp.google.com/#review/122012121 am: 0772f44acf am: 718d27d8dc
am: 53b552d7f3

* commit '53b552d7f3f7071019a3c84d58d1e3fccc642c71':
  fix redirects, as per linkchecker cl: https://critique.corp.google.com/#review/122012121

Change-Id: Ie72fb65bdff90844cec767250cb33bbfba72c9f7