add selinux documentation

defaults/main.yml

@@ -1,21 +1,23 @@
 ---
 cups_version: 2.2.10
 
+# @var cups_packages_extra:description: >
 # Install dependencies or custom driver packages
+# @end
 cups_packages_extra: []
 
-## Example
+# @var cups_selinux_fcontext:example: $>
-# cups_selinux_fcontext:
+# [{ target: '/opt/brother', setype: 'bin_t' }]
-#   - { target: '/opt/brother', setype: 'bin_t' }
+# @end
 cups_selinux_fcontext: []
-## Example
+
-# cups_selinux_restorecon:
+# cups_selinux_restorecon:example: ["-R /opt/brother"]
-#   - -R /opt/brother
 cups_selinux_restorecon: []
 
 cups_admin_group: printadmin
 cups_admin_users:
-  - { name: 'cupsadm', password: 'secure' }
+  - name: 'cupsadm'
+    password: 'secure'
 
 cups_bind_url:
   - localhost:631