fixup: formatting-issues Python code reformatted using Black

Author: autoblack

tests/test_smile.py

@@ -1412,4 +1412,4 @@ class ConnectError(PlugwiseTestError):
         """Raised when connectivity test fails."""
 
     class UnexpectedError(PlugwiseTestError):
-        """Raised when something went against logic."""
+        """Raised when something went against logic."""