fix(RN): typo in RN snippet (#10809)

Author: kahest

docs/platforms/react-native/session-replay/index.mdx

@@ -49,7 +49,7 @@ Sentry.init({
     replaysSessionSampleRate: 1.0,
     replaysOnErrorSampleRate: 1.0,
   },
-  integration: [
+  integrations: [
     Sentry.mobileReplayIntegration({
       maskAllText: true,
       maskAllImages: true,