typo for the automaticallyAdjustKeyboardInsets description (#33948)

Summary:
Minor typo change

## Changelog

[iOS] [Fixed] - Typo in the documation for the `automaticallyAdjustKeyboardInsets` prop

Pull Request resolved: #33948

Test Plan: Read the paragraph, solid.

Reviewed By: kacieb

Differential Revision: D36810184

Pulled By: cortinico

fbshipit-source-id: af586beb4eb3fd4337d2df8612d39c6abb0a37bf

Libraries/Components/ScrollView/ScrollView.js

@@ -173,8 +173,8 @@ type IOSProps = $ReadOnly<{|
    */
   automaticallyAdjustContentInsets?: ?boolean,
   /**
-   * Controls whether the ScrollView should automatically adjust it's contentInset
-   * and scrollViewInsets when the Keyboard changes it's size. The default value is false.
+   * Controls whether the ScrollView should automatically adjust its `contentInset`
+   * and `scrollViewInsets` when the Keyboard changes its size. The default value is false.
    * @platform ios
    */
   automaticallyAdjustKeyboardInsets?: ?boolean,