update FunctionParameters def, making parameters optional

openapi.yaml

@@ -5784,7 +5784,7 @@ components:
 
     FunctionParameters:
       type: object
-      description: "The parameters the functions accepts, described as a JSON Schema object. See the [guide](/docs/guides/text-generation/function-calling) for examples, and the [JSON Schema reference](https://json-schema.org/understanding-json-schema/) for documentation about the format.\n\nTo describe a function that accepts no parameters, provide the value `{\"type\": \"object\", \"properties\": {}}`."
+      description: "The parameters the functions accepts, described as a JSON Schema object. See the [guide](/docs/guides/text-generation/function-calling) for examples, and the [JSON Schema reference](https://json-schema.org/understanding-json-schema/) for documentation about the format.\n\nOmitting `parameters` defines a function with an empty parameter list."
       additionalProperties: true
 
     ChatCompletionFunctions:
@@ -5801,7 +5801,6 @@ components:
           $ref: "#/components/schemas/FunctionParameters"
       required:
         - name
-        - parameters
 
     ChatCompletionFunctionCallOption:
       type: object
@@ -5840,7 +5839,6 @@ components:
           $ref: "#/components/schemas/FunctionParameters"
       required:
         - name
-        - parameters
 
     ChatCompletionToolChoiceOption:
       description: |