update to json.RawMessage (#441)

chat.go

@@ -65,7 +65,7 @@ type FunctionDefinition struct {
 	Name        string `json:"name"`
 	Description string `json:"description,omitempty"`
 	// Parameters is an object describing the function.
-	// You can pass a []byte describing the schema,
+	// You can pass json.RawMessage to describe the schema,
 	// or you can pass in a struct which serializes to the proper JSON schema.
 	// The jsonschema package is provided for convenience, but you should
 	// consider another specialized library if you require more complex schemas.