added bgp routing-instance routes to docs

docs/source/protocol/msr.rst

@@ -38,6 +38,17 @@ These endpoints are intended for use by MSR.
 .. autofunction:: inventory_provider.routes.msr.bgp_group_peerings
 
 
+/msr/bgp/routing-instances
+-------------------------------------
+
+.. autofunction:: inventory_provider.routes.msr.get_peering_routing_instances
+
+
+/msr/bgp/routing-instance-peeringns</name>
+--------------------------------------------
+
+.. autofunction:: inventory_provider.routes.msr.bgp_routing_instance_peerings
+
 helpers
 -------------------------------------