Fixed ruff errors

Author: wrisa

instrumentation-genai/opentelemetry-instrumentation-langchain/src/opentelemetry/instrumentation/langchain/callback_handler.py

@@ -67,9 +67,7 @@ def on_chat_model_start(
             if (model := kwargs.get(model_tag)) is not None:
                 request_model = model
                 break
-            elif (
-                model := (params or {}).get(model_tag)
-            ) is not None:
+            elif (model := (params or {}).get(model_tag)) is not None:
                 request_model = model
                 break
             elif (model := (metadata or {}).get(model_tag)) is not None:

instrumentation-genai/opentelemetry-instrumentation-langchain/tests/test_llm_call.py

@@ -115,10 +115,7 @@ def assert_openai_completion_attributes(
 def assert_bedrock_completion_attributes(
     span: ReadableSpan, response: Optional
 ):
-    assert (
-        span.name
-        == "chat us.amazon.nova-lite-v1:0"
-    )
+    assert span.name == "chat us.amazon.nova-lite-v1:0"
     assert span.attributes[gen_ai_attributes.GEN_AI_OPERATION_NAME] == "chat"
     assert (
         span.attributes[gen_ai_attributes.GEN_AI_REQUEST_MODEL]