message: docs: fix grpc_bridge.rst formatting
diff: @@ -61,7 +61,7 @@ To use the Python service and send gRPC requests::
  $ docker-compose exec python /client/client.py get foo
  baz
  -In the running docker-compose container, you should see the gRPC service printing a record of its activity:
  +In the running docker-compose container, you should see the gRPC service printing a record of its activity::
  grpc_1 | 2017/05/30 12:05:09 set: foo = bar
  grpc_1 | 2017/05/30 12:05:12 get: foo
  