Fix docstr sample code

Author: aliu39

dev-packages/browser-integration-tests/suites/integrations/featureFlags/unleash/init.js

@@ -21,5 +21,3 @@ Sentry.init({
   sampleRate: 1.0,
   integrations: [window.sentryUnleashIntegration],
 });
-
-

packages/browser/src/integrations/featureFlags/unleash/integration.ts

@@ -21,8 +21,11 @@ import type { IVariant, UnleashClient, UnleashClientClass } from './types';
  *   integrations: [unleashIntegration],
  * });
  *
- * const unleashClient = new UnleashClient(...);
- * unleashClient.isEnabled('my-feature');
+ * const unleash = new UnleashClient(...);
+ * unleash.start();
+ *
+ * unleash.isEnabled('my-feature');
+ * unleash.getVariant('other-feature');
  * Sentry.captureException(new Error('something went wrong'));
  * ```
  */