Fix 'Isues or questions' in ios-native documentation

Summary:
Same issue as D42282609 (2f4c88c) but on different page. Missed this one in earlier diff.

Fix typo in 'Isues or questions' on ios-native. zbgs search, should now be fixed on all pages.

https://www.internalfb.com/intern/staticdocs/flipper/docs/getting-started/ios-native/

Differential Revision: D42444164

fbshipit-source-id: 91be4c41caea7549f278ca4621bb3b54f024b9b8

docs/getting-started/ios-native.mdx

@@ -152,6 +152,6 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
 Finally, you need to add plugins to your Flipper client. The Layout Inspector plugin is shown above to get you started.
 See [Network Plugin](../setup/plugins/network.mdx) and [Layout Inspector Plugin](../features/plugins/inspector.mdx) for information on how to add them and enable Litho or ComponentKit support. You can check the sample apps in the [GitHub repo](https://github.com/facebook/flipper) for examples of integrating other plugins.
 
-## Isues or questions
+## Issues or questions
 
 If you encounter any issues or have any questions, refer to the [Troubleshooting](troubleshooting/troubleshooting.mdx) section.