fix: redirect users to success url after /donation completion (#39404)

client/src/components/Donation/DonateForm.js

@@ -19,7 +19,8 @@ import {
   durationsConfig,
   defaultAmount,
   defaultStateConfig,
-  onetimeSKUConfig
+  onetimeSKUConfig,
+  donationUrls
 } from '../../../../config/donation-settings';
 import { deploymentEnv } from '../../../config/env.json';
 import Spacer from '../helpers/Spacer';
@@ -95,6 +96,9 @@ class DonateForm extends Component {
         error: error
       }
     }));
+    if (success) {
+      this.props.navigate(donationUrls.successUrl);
+    }
   }
 
   getActiveDonationAmount(durationSelected, amountSelected) {
@@ -159,8 +163,8 @@ class DonateForm extends Component {
         };
     const { error } = await stripe.redirectToCheckout({
       items: [item],
-      successUrl: 'https://www.freecodecamp.org/news/thank-you-for-donating/',
-      cancelUrl: 'https://freecodecamp.org/donate'
+      successUrl: donationUrls.successUrl,
+      cancelUrl: donationUrls.cancelUrl
     });
     console.error(error);
   }