小修复，报错提示

tts.py

@@ -19,7 +19,7 @@ def get_free_tts(name, text):
         "Authorization": "Bearer " + key_get('tts'),
         "Content-Type": "application/json"
     }
-    model = free_map[name]
+    model = free_map.get(name)
     if model is None:
         return "该模型暂不支持"
     response = requests.post(url, headers=headers, json={
@@ -52,4 +52,4 @@ def get_free_tts(name, text):
         return "获取失败"
 
 if __name__ == "__main__":
-    print(get_free_tts("诺艾尔", "你好"))
+    print(get_free_tts("诺艾尔111", "你好"))