Update whitespace and change td in thead to th

This commit just changes the autogenerated files to match what's output
after the following commits in openstack-doc-tools:
d740b7f4dd84a2142b7a370ebf3cf10f76c2a651
6708afbef1f4a662fd1b164ce3f635ad71ba7662

Change-Id: Ie48b99deb54877f9857abe94e90c9f160852aa92
Merge "Update whitespace and change td in thead to th"