Add remark for automatic updates and packages

default.prf

@@ -400,10 +400,13 @@ permdir:/root/.ssh:rwx------:root:-:WARN:
 # Automatic Updating
 # -------------------
 #
-# These settings are required when using the lynis update functionality.
+# These settings can be used to create an option to do automatic updates.
 # By specifying local paths and your update server, the tool can do an update
 # check, compare versions and download a new version.
 #
+# If you installed Lynis as a package, then update via your package manager. See
+# https://packages.cisofy.com for more information.
+#
 #################################################################################
 
 # Local directory (without slash at end) where lynis directory will be installed