Change If1e34ea112b0cff328a58ec2fc9c3f5a5005f1c6 renamed the Google
backup driver, but the configuration docs for the driver were not
updated. This results in the incorrect driver name being provided
for backup driver configuration and local document builds failing
due to no configuration options being found when looking for them
in the old location.
Change-Id: I40fa544892ed9ea9fb5975baeafb7c9a7e2f12a3
fc6473bc20