Updates httplib2 link

[originell]

just a small update as they moved the httplib2 project to it's own github user.

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[theacodes]

Hi @originell, thanks for the fix. I'm happy to merge this once you make googlebot happy.

[theacodes]

Closing due to inactivity. Feel free to comment if you want to re-open it.

[originell]

Completely forgot about this. I signed it! :)

[theacodes]

Thanks, @originell!