doc/cephadm: remove downgrade reference from upgrade docs

This has been in here for years, but cephadm will block
attempted upgrades to lower versions and we generally
don't want people to think this is supported or safe.

Signed-off-by: Adam King <adking@redhat.com>
(cherry picked from commit 787130175d3d40d3671be88a81c4b8843655b01e)

diff --git a/doc/cephadm/upgrade.rst b/doc/cephadm/upgrade.rst
index 4331db9547fb15c5c59de1d5665e184c57e80d13..f37b268a0c88e1a637cb2291119d687680253a2a 100644 (file)
--- a/doc/cephadm/upgrade.rst
+++ b/doc/cephadm/upgrade.rst
@@ -31,13 +31,13 @@ Before you use cephadm to upgrade Ceph, verify that all hosts are currently onli
 
    ceph -s
 
-To upgrade (or downgrade) to a specific release, run the following command:
+To upgrade to a specific release, run a command of the following form:
 
 .. prompt:: bash #
 
   ceph orch upgrade start --ceph-version <version>
 
-For example, to upgrade to v16.2.6, run the following command:
+For example, to upgrade to v16.2.6, run a command of the following form:
 
 .. prompt:: bash #