OSDOCS-10042: fix missing backtick MicroShift manifests module

Author: ShaunaDiaz

modules/microshift-manifests-overview.adoc

@@ -19,7 +19,7 @@ At every start, {microshift-short} searches the following manifest directories f
 
 * `/etc/microshift/manifests`
 * `/etc/microshift/manifests.d/++*++`
-* `/usr/lib/microshift/
+* `/usr/lib/microshift/`
 * `/usr/lib/microshift/manifests.d/++*++`
 
 {microshift-short} automatically runs the equivalent of the `kubectl apply -k` command to apply the manifests to the cluster if any of the following file types exists in the searched directories: