A bug in AWS documentation caused this to be named "NoSuchTagSetError",
when the proper name (now fixed in the docs) is "NoSuchTagSet". Fix
this so we match AWS.
Fixes: https://tracker.ceph.com/issues/55460
Author: Peter Gerber <peter@arbitrary.ch> Signed-off-by: Daniel Gryniewicz <dang@redhat.com>