Fix PlayerRestrictions key name (#172)

canSkipPrev changed to canSkipPrevious

Author: shaurya2612

android/src/main/java/com/reactlibrary/Convert.java

@@ -132,7 +132,7 @@ public static ReadableMap toMap(PlayerRestrictions restrictions) {
         map.putBoolean("canRepeatTrack", restrictions.canRepeatTrack);
         map.putBoolean("canSeek", restrictions.canSeek);
         map.putBoolean("canSkipNext", restrictions.canSkipNext);
-        map.putBoolean("canSkipPrev", restrictions.canSkipPrev);
+        map.putBoolean("canSkipPrevious", restrictions.canSkipPrev);
         map.putBoolean("canToggleShuffle", restrictions.canToggleShuffle);
 
         return map;