fix pylint format errors

Author: yijiezh

src/sagemaker/rl/estimator.py

@@ -42,8 +42,8 @@
         "0.5": {"tensorflow": "1.11"},
         "0.6.5": {"tensorflow": "1.12"},
         "0.6": {"tensorflow": "1.12"},
-        "0.8.2":{"tensorflow": "2.1"},
-        "0.8.5":{"tensorflow": "2.1", "pytorch": "1.5"}
+        "0.8.2": {"tensorflow": "2.1"},
+        "0.8.5": {"tensorflow": "2.1", "pytorch": "1.5"}
     },
 }
 
@@ -291,7 +291,7 @@ def train_image(self):
                 self._image_version(),
                 py_version="py36",
                 account=DEFAULT_RL_ACCOUNT
-             )
+            )
 
         return fw_utils.create_image_uri(
             self.sagemaker_session.boto_region_name,