Add slash to base url help text

variables.env

@@ -8,7 +8,7 @@ RESTART_POLICY=always
 
 # necessary for running RDMO under a subpath
 # by default rdmo is available under the root url
-# i.e. for 'http://yourrdmo.com/rdmo' set the key to 'rdmo'
+# i.e. for 'http://yourrdmo.com/rdmo' set the key to '/rdmo'
 BASE_URL=/
 
 # the list of URLs under which this application is available