doc: remove whitespace

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
doc: remove node requirement from 'mon create-initial'

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
Merge pull request #2714 from ceph/wip-9730

doc: `ceph-deploy mon create-initial` doesn't take arguments

Reviewed-by: John Wilkins <jowilkin@redhat.com>