fixing formatting errors

Author: Andres Beck-Ruiz

instrumentation/opentelemetry-instrumentation-flask/src/opentelemetry/instrumentation/flask/__init__.py

@@ -223,7 +223,7 @@ def __init__(self, *args, **kwargs):
 class FlaskInstrumentor(BaseInstrumentor):
     # pylint: disable=protected-access,attribute-defined-outside-init
     """An instrumentor for flask.Flask
-    
+
     See `BaseInstrumentor`
     """