community[patch]: docstrings (#16810)

- added missed docstrings
- formated docstrings to the consistent form

libs/community/langchain_community/chat_models/zhipuai.py

@@ -20,11 +20,15 @@ logger = logging.getLogger(__name__)
 
 
 class ref(BaseModel):
+    """Reference used in CharacterGLM."""
+
     enable: bool = Field(True)
     search_query: str = Field("")
 
 
 class meta(BaseModel):
+    """Metadata used in CharacterGLM."""
+
     user_info: str = Field("")
     bot_info: str = Field("")
     bot_name: str = Field("")