Fixes spelling mistake inside TouchableNativeFeedback.android.js

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Closes https://github.com/facebook/react-native/pull/12901

Differential Revision: D4699296

Pulled By: hramos

fbshipit-source-id: 514ae27c47c8ae22e1aadb99a787daa6fdc3b6a4

Libraries/Components/Touchable/TouchableNativeFeedback.android.js

@@ -255,7 +255,7 @@ var TouchableNativeFeedback = React.createClass({
 
     // We need to clone the actual element so that the ripple background drawable
     // can be applied directly to the background of this element rather than to
-    // a wrapper view as done in outher Touchable*
+    // a wrapper view as done in other Touchable*
     return React.cloneElement(
       child,
       childProps