doc/cephadm: improve "Activate Existing OSDs".

Make three minor changes to doc/cephadm/services/osd.rst. These three
changes were suggested by Eugen Block, who reviewed this procedure after
developing it.

Co-authored-by: Eugen Block <[email protected]>
Signed-off-by: Zac Dover <[email protected]>

Author: zdover23

doc/cephadm/services/osd.rst

@@ -1071,17 +1071,17 @@ This procedure assumes the existence of two hosts: ``ceph01`` and ``ceph04``.
 - ``ceph04`` is the host with the recently reinstalled operating system.
 
 #. Install ``cephadm`` and ``podman`` on the host. The command for installing
-   these utilties will depend upon the operating system of the host.
+   these utilities will depend upon the operating system of the host.
 
 #. Retrieve the public key.
 
    .. prompt:: bash ceph01#
 
       ceph cephadm get-pub-key > ceph.pub
 
-#. Copy the key to the freshly reinstalled host:
+#. Copy the key (from ``ceph01``) to the freshly reinstalled host (``ceph04``):
 
-   .. prompt:: bash ceph04#
+   .. prompt:: bash ceph01#
 
       ssh-copy-id -f -i ceph.pub root@<hostname>
 
@@ -1141,7 +1141,7 @@ This procedure assumes the existence of two hosts: ``ceph01`` and ``ceph04``.
 
    .. prompt:: bash #
 
-      ceph cephadm osd activate <ceph04>
+      ceph cephadm osd activate ceph04
 
    This command causes ``cephadm`` to scan all existing disks for OSDs. This
    command will make ``cephadm`` deploy any missing daemons to the host