Fix multi-leg config

Signed-off-by: Ian Costanzo <ian@anon-solutions.ca>

Author: ianco

demo/multi_ledger_config.yml

@@ -7,4 +7,4 @@
   genesis_url: 'http://test.bcovrin.vonx.io/genesis'
 - id: greenlightTest
   is_production: true
-  genesis_url: 'http://test.greenlight.bcovrin.vonx.io/genesis'
+  genesis_url: 'http://dev.greenlight.bcovrin.vonx.io/genesis'