doc/rados: edit ops/user-management.rst

Edit an sentence in the imperative mood so that it matches the general
form of imperative sentences immediately preceding commands that contain
replaceable portions.

This commit targets only the Squid release branch.

Follows up on ceph#58235.

Tracker: https://tracker.ceph.com/issues/66617

Signed-off-by: Zac Dover <[email protected]>
(cherry picked from commit 20e6304)

Author: zdover23

doc/rados/operations/user-management.rst

@@ -752,11 +752,11 @@ results to a keyring file, and then import the keyring into your main
 Key rotation
 ------------
 
-To rotate the secret for an entity, use:
+To rotate the secret for an entity, run a command of the following form:
 
 .. prompt:: bash #
 
-    ceph auth rotate <entity>
+   ceph auth rotate <entity>
 
 This avoids the need to delete and recreate the entity when its key is
 compromised, lost, or scheduled for rotation.