doc: admin_new_chain.md...

Author: baabeetaa

docs/admin_new_chain.md

@@ -2,9 +2,11 @@
 
 ### Video Log
 
-[Cosmosia Video Log - How to add a new chain](https://www.youtube.com/watch?v=AXyyAp6op7E ':include :type=iframe width=100% height=400px')
+[Cosmosia Video Log - How to add a new chain](https://www.youtube.com/embed/AXyyAp6op7E ':include :type=iframe width=100% height=400px')
 
 
+### Steps
+
 Command executed on a docker swarm manager node
 
 1. Add info of the new chain to [chain_registry.ini](../data/chain_registry.ini)