doc: upserver manpage fixes

Add missing option -rxbind.

Change-Id: I1e6057c3747cf6c502bf14e1d094b8b64691615d
Reviewed-on: http://gerrit.openafs.org/10405
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
Tested-by: Derrick Brashear <shadow@your-file-system.com>
doc: vldb_check manpage fixes

 - Add missing option -fix

 - Don't use brackets in the option list; we don't do this in most
   other manpages.

Change-Id: Ifd87dd749aaab2987b2f9c3224b8e931b7bc221c
Reviewed-on: http://gerrit.openafs.org/10403
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>