style(langgraph): health_plan.py 文件末尾补充换行符

cfc-langgraph/app/models/health_plan.py

@@ -29,4 +29,4 @@ class HealthPlanResponse(BaseModel):
     overview: str = ""
     sections: List[HealthPlanSection] = []
     abnormal_indicators: List[dict] = []
-    knowledge_sources: List[dict] = []
+    knowledge_sources: List[dict] = []