Install SCC Manager plugin for Hammer via foreman-installer

Refs PR 1010 in foreman-installer

Author: maximiliankolb

guides/common/modules/proc_installing-the-scc-manager.adoc

@@ -6,9 +6,11 @@
 Use this procedure to install the SCC Manager plugin on your {Project}.
 
 .Procedure
-* Install the SCC Manager plugin on your {ProjectServer}:
+* On your {ProjectServer}, install the SCC Manager plugin:
 +
 [options="nowrap", subs="+quotes,verbatim,attributes"]
 ----
-# {foreman-installer} --enable-foreman-plugin-scc-manager
+# {foreman-installer} \
+--enable-foreman-cli-scc-manager \
+--enable-foreman-plugin-scc-manager
 ----