fix(unreal-unboarding): Display unreal crash reporter URL (#75970)

Display unreal specific reporter URL.

Closes https://github.com/getsentry/sentry/issues/71733

static/app/gettingStartedDocs/unreal/unreal.tsx

@@ -33,7 +33,7 @@ void Verify()
 const getCrashReporterConfigSnippet = (params: Params) => `
 [CrashReportClient]
 CrashReportClientVersion=1.0
-DataRouterUrl="${params.dsn.public}"`;
+DataRouterUrl="${params.dsn.unreal}"`;
 
 const onboarding: OnboardingConfig = {
   install: () => [