Restored dash from group names

templates/update_replication_factor.cql.j2

diff --git a/templates/update_replication_factor.cql.j2 b/templates/update_replication_factor.cql.j2
index 3412ed0..26f9496 100644
--- a/templates/update_replication_factor.cql.j2
+++ b/templates/update_replication_factor.cql.j2
@@ -1,2 +1,2 @@
 CONSISTENCY {{ consistency }};
-ALTER KEYSPACE {{ keyspace }} WITH REPLICATION = { 'class': 'NetworkTopologyStrategy', 'dc1': {{ replication_factor }}, 'dc2': {{ replication_factor }} };
+ALTER KEYSPACE {{ keyspace }} WITH REPLICATION = { 'class': 'NetworkTopologyStrategy', 'dc-1': {{ replication_factor }}, 'dc-2': {{ replication_factor }} };