Fix black formatting for method signature

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Co-Authored-By: Claude <[email protected]>

Author: syed-ahsan-ishtiaque

aws-opentelemetry-distro/src/amazon/opentelemetry/distro/exporter/aws/metrics/base_emf_exporter.py

@@ -191,9 +191,7 @@ def _get_dimension_names(self, attributes: Attributes) -> List[str]:
         # For now, use all attributes as dimensions
         return list(attributes.keys())
 
-    def _add_lambda_dimensions(
-        self, emf_log: Dict, dimension_names: List[str], resource: Resource
-    ) -> List[str]:
+    def _add_lambda_dimensions(self, emf_log: Dict, dimension_names: List[str], resource: Resource) -> List[str]:
         """
         Add Service and Environment dimensions for Lambda environments.