fix docs for useSendFeedback()

Author: roncohen

packages/react-sdk/README.md

@@ -347,13 +347,9 @@ function CustomFeedbackForm() {
 
   const handleSubmit = async (data: FormData) => {
     await sendFeedback({
-      featureId: "bucket-feature-id",
+      featureKey: "bucket-feature-key",
       score: parseInt(data.get("score") as string),
       comment: data.get("comment") as string,
-      metadata: {
-        source: "custom-form",
-        userRole: "admin",
-      },
     });
   };