correct whitespace errors in readme files

Fix the trailing whitespace and leading spaces
before tabs in the readme files.

Reviewed-on: http://gerrit.openafs.org/8877
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Ken Dreyer <ktdreyer@ktdreyer.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
(cherry picked from commit 8a17568fb4fd3f77a3b9d043bbe49e992bca8266)

Change-Id: I60fb4d05cf79f4998e8652026dc3f1f636bcd6a4
Reviewed-on: http://gerrit.openafs.org/9518
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>
Tested-by: BuildBot <buildbot@rampaginggeek.com>