linting fix

Author: liustve

aws-opentelemetry-distro/src/amazon/opentelemetry/distro/otlp_sigv4_exporter.py

@@ -62,7 +62,7 @@ def _export(self, serialized_data: bytes):
                     self._session.headers.update(dict(request.headers))
 
                 except NoCredentialsError as signing_error:
-                    _logger.error(f"Failed to sign request: {signing_error}")
+                    _logger.error("Failed to sign request: %s", signing_error)
 
             else:
                 _logger.error("Failed to get credentials to export span to OTLP CloudWatch endpoint")

aws-opentelemetry-distro/tests/amazon/opentelemetry/distro/test_otlp_sigv4_exporter.py

@@ -40,7 +40,8 @@ def setUp(self):
         self.invalid_cw_otlp_tracing_endpoints = [
             "https://xray.bad-region-1.amazonaws.com/v1/traces",
             "https://xray.us-east-1.amaz.com/v1/traces",
-            "https://logs.us-east-1.amazonaws.com/v1/logs" "https://test-endpoint123.com/test",
+            "https://logs.us-east-1.amazonaws.com/v1/logs",
+            "https://test-endpoint123.com/test",
         ]
 
         self.expected_auth_header = "AWS4-HMAC-SHA256 Credential=test_key/some_date/us-east-1/xray/aws4_request"