More minor changes in usage().

misc-scripts/production_database/scripts/push_master_tables.pl

@@ -27,12 +27,16 @@ or
 where
 
   --release/-r  The current release (required).
+
   --master/-m   The master server where the production database lives
                 (optional, default is 'ens-staging1').
   --server/-s   A database server (optional, may occur several times,
                 default is 'ens-staging1' and 'ens-staging2').
+
   --dbport/-P   The port to connect to (optional, default is '3306').
-  --dbuser/-u   The user to connect as (optional, default is 'ensro').
+
+  --dbuser/-u   The (read-only) user to connect as (optional,
+                default is 'ensro').
   --dbpass/-p   The password to connect with (optional, no default).
 
   --help/-h     Displays this help text.