cmdlib: fix typos in the docstring for LogicalUnit
cmdlib: fix typos in the docstring for LogicalUnit

Signed-off-by: Adeodato Simo <16293852a0900193fe70fa7d24f714f37ba99a56@google.com>
Reviewed-by: Michael Hanselmann <68b67885ff74281219b4a4be33cc20fd45078d7c@google.com>

andir/ganeti,apyrgio/ganeti,grnet/snf-ganeti,yiannist/ganeti,ganeti-github-testing/ganeti-test-1,onponomarev/ganeti,yiannist/ganeti,yiannist/ganeti,leshchevds/ganeti,grnet/snf-ganeti,dimara/ganeti,apyrgio/snf-ganeti,mbakke/ganeti,leshchevds/ganeti,ganeti/ganeti,andir/ganeti,mbakke/ganeti,bitemyapp/ganeti,ganeti-github-testing/ganeti-test-1,ganeti/ganeti,mbakke/ganeti,ganeti/ganeti,apyrgio/snf-ganeti,apyrgio/ganeti,bitemyapp/ganeti,dimara/ganeti,leshchevds/ganeti,onponomarev/ganeti,andir/ganeti