Update rcudbinfo.md (#832)

* clarify the password entries

* minor doc update

Author: jshum2479

site/rcuinfo.md

@@ -9,11 +9,13 @@ domainInfo:
     RCUDbInfo:
         useATP : true
         rcu_prefix : DEV
-        rcu_schema_password : xxxxx
+        rcu_admin_password: <database admin password is required only when you specify -run_rcu flag, will be prompted
+         if not specified>
+        rcu_schema_password : <RCU schema password, user will be prompted if not specified>
         atp.admin.user : admin
         tns.alias : dbatp_tp
-        javax.net.ssl.keyStorePassword : xxxx
-        javax.net.ssl.trustStorePassword : xxxx
+        javax.net.ssl.keyStorePassword : <atp wallet password>
+        javax.net.ssl.trustStorePassword : <atp wallet password>
 ```           
 The database wallet can be included in the archive file under `atpwallet` zipentry structure
 
@@ -29,11 +31,12 @@ For a non-ATP database, use the following example:
 domainInfo:
     RCUDbInfo:
         rcu_prefix : DEV
-        # Optional rcu_db_user for creating RCU schema if -run_rcu flag is specified. Default user is SYS if not specified
-        # This user must have SYSDBA privilege and this is the equivalent of -dbUser in the RCU utility
+        # Optional rcu_db_user for creating RCU schema if -run_rcu flag is specified. Default user is SYS if not specified.
+        # This user must have SYSDBA privilege and this is the equivalent of -dbUser in the RCU utility.
         rcu_db_user: superuser
-        rcu_schema_password : xxxxx
-        rcu_admin_password : xxxx
+        rcu_schema_password : <rcu schema password, will be prompted if not specified>
+        rcu_admin_password : <database admin password is required only when you specify -run_rcu flag, will be prompted
+         if not specified>
         rcu_db_conn_string : 'dbhost:1521/pdborcl'
 ```        
 RCU `-variables` option of the repository creation utility can now be included in the `RCUDbInfo` section with the key `rcu_variables`: