Update README.md

Fix typo

Author: Kerumen

README.md

@@ -971,7 +971,7 @@ Now you'll be able to see CodePush logs in either debug or release mode, on both
 | Issue / Symptom | Possible Solution |
 |-----------------|-------------------|
 | Compilation Error | Double-check that your version of React Native is [compatible](#supported-react-native-platforms) with the CodePush version you are using. |
-| Network timeout / hang when calling `sync` or `checkForUpadte` in the iOS Simulator | Try resetting the simulator by selecting the `Simulator -> Reset Content and Settings..` menu item, and then re-running your app. |
+| Network timeout / hang when calling `sync` or `checkForUpdate` in the iOS Simulator | Try resetting the simulator by selecting the `Simulator -> Reset Content and Settings..` menu item, and then re-running your app. |
 | Server responds with a `404` when calling `sync` or `checkForUpdate` | Double-check that the deployment key you added to your `Info.plist` (iOS), `build.gradle` (Android) or that you're passing to `sync`/`checkForUpdate`, is in fact correct. You can run `code-push deployment ls [APP_NAME] -k` to view the correct keys for your app deployments. |
 | Update not being discovered | Double-check that the version of your running app (e.g. `1.0.0`) matches the version you specified when releasing the update to CodePush. Additionally, make sure that you are releasing to the same deployment that your app is configured to sync with. |
 | Update not being displayed after restart | If you're not calling `sync` on app start (e.g. within `componentDidMount` of your root component), then you need to explicitly call `notifyApplicationReady` on app start, otherwise, the plugin will think your update failed and roll it back. |