Fix typo in SafeArea documentation

Reviewed By: shergin

Differential Revision: D6316656

fbshipit-source-id: 12d37f9d8ad2481b7f6685c8d675ce84234bd814

Author: Wei Yeh

Diff for: Libraries/Components/SafeAreaView/SafeAreaView.ios.js

@@ -24,7 +24,7 @@ type Props = ViewProps & {
 /**
  * Renders nested content and automatically applies paddings reflect the portion of the view
  * that is not covered by navigation bars, tab bars, toolbars, and other ancestor views.
- * Moreover, and most importantly, Safe Area's paddings feflect physical limitation of the screen,
+ * Moreover, and most importantly, Safe Area's paddings reflect physical limitation of the screen,
  * such as rounded corners or camera notches (aka sensor housing area on iPhone X).
  */
 class SafeAreaView extends React.Component<Props> {