Add api_key parameter to Moderation.create (#123)

* Add api_key parameter to Moderation.create

* Reverted auto-formatted linting

Author: zafercavdar

openai/api_resources/moderation.py

@@ -11,14 +11,14 @@ def get_url(self):
         return "/moderations"
 
     @classmethod
-    def create(cls, input: Union[str, List[str]], model: Optional[str] = None):
+    def create(cls, input: Union[str, List[str]], model: Optional[str] = None, api_key: Optional[str] = None):
         if model is not None and model not in cls.VALID_MODEL_NAMES:
             raise ValueError(
                 f"The parameter model should be chosen from {cls.VALID_MODEL_NAMES} "
                 f"and it is default to be None."
             )
 
-        instance = cls()
+        instance = cls(api_key=api_key)
         params = {"input": input}
         if model is not None:
             params["model"] = model