chore: remove mention of TRUSTED_TESTERS.md (#383)

packages/shorebird_cli/lib/src/commands/account/subscribe_account_command.dart

@@ -31,7 +31,7 @@ patches to your apps.
 
 The subscription costs \$20 USD per month per user and is billed through Stripe.
 
-Visit ${styleUnderlined.wrap(lightCyan.wrap('https://github.com/shorebirdtech/shorebird/blob/main/TRUSTED_TESTERS.md'))} for more details.''';
+Visit ${styleUnderlined.wrap(lightCyan.wrap('https://shorebird.dev'))} for more details.''';
 
   @override
   Future<int> run() async {

packages/shorebird_cli/test/src/commands/account/subscribe_account_command_test.dart

@@ -64,10 +64,10 @@ void main() {
       expect(subscribeAccountCommand.description, isNotEmpty);
     });
 
-    test('summary has price and link to trusted testers doc', () {
+    test('summary has price and link to shorebird.dev', () {
       expect(
         subscribeAccountCommand.summary,
-        stringContainsInOrder([r'$20', 'TRUSTED_TESTERS.md']),
+        stringContainsInOrder([r'$20', 'shorebird.dev']),
       );
     });