users.conf: made requested changes

src/modules/users/users.conf

@@ -31,9 +31,14 @@ autologinGroup:  autologin
 # Possible values are: true to enable or false to disable the checkbox by default
 doAutologin:     true
 
-# When enabled calamares creates a sudoers file for the user.
+# When set to a non-empty string, Calamares creates a sudoers file for the user.
 #  /etc/sudoers.d/10-installer
 # Remember to add sudoersGroup to defaultGroups.
+#
+# If your Distribution already sets up a group of sudoers in its packaging,
+# remove this setting (delete or comment out the line below). Otherwise,
+# the setting will be duplicated in the /etc/sudoers.d/10-installer file,
+# potentially confusing users.
 sudoersGroup:    wheel
 
 # Setting this to false , causes the root account to be disabled.