added token

frontend/src/Components/ChangeUsername.tsx

@@ -13,9 +13,10 @@ function ChangeUsername(): JSX.Element {
   const handleSubmit = async (): Promise<void> => {
     try {
       // Call the API function to change the username
+      const token = localStorage.getItem("accessToken") ?? "";
       const response = await api.changeUserName(
         { prevName: "currentName", newName: newUsername },
-        "token",
+        token,
       );
       if (response.success) {
         // Optionally, add a success message or redirect the user