Update usgs_service.py

usgs_service.py

@@ -43,7 +43,7 @@ def fetch_global_last24h_text(min_mag: float = 5.0, limit: int = 10) -> str:
         return f"❌ 查詢失敗：{e}"
 
 def fetch_taiwan_df_this_year(min_mag: float = 5.0) -> pd.DataFrame | str:
-    """擷取今年以來台灣區域的顯著地震。"""
+    """從USGS擷取今年以來台灣區域的顯著地震。"""
     now_utc = datetime.now(timezone.utc)
     start_of_year_utc = datetime(now_utc.year, 1, 1, tzinfo=timezone.utc)
     params = {