use systemctl enable --now shorthand

In two more places, use `systemctl enable --now` instead of an
additional `systemctl start` command.

Signed-off-by: Dan Kenigsberg <[email protected]>

Author: dankenigsberg

modules/installation-special-config-kmod.adoc

@@ -165,18 +165,10 @@ $ sudo kmods-via-containers build simple-kmod $(uname -r)
 ----
 
 . Enable and start the systemd service:
-.. Enable the service:
 +
 [source,terminal]
 ----
-$ sudo systemctl enable [email protected]
-----
-
-.. Start the service:
-+
-[source,terminal]
-----
-$ sudo systemctl start [email protected]
+$ sudo systemctl enable [email protected] --now
 ----
 
 .. Review the service status:

modules/ipi-install-preparing-the-provisioner-node-for-openshift-install.adoc

@@ -76,7 +76,6 @@ $ sudo firewall-cmd --reload
 +
 [source,terminal]
 ----
-$ sudo systemctl start libvirtd
 $ sudo systemctl enable libvirtd --now
 ----