Fixed arguments to StatusBarIOS.setStyle in the NavigatorIOSColorExample

Summary:
- Followup of 45d8fb0ef6
Closes https://github.com/facebook/react-native/pull/1558
Github Author: Prathamesh Sonpatki <csonpatki@gmail.com>

Test Plan: Imported from GitHub, without a `Test Plan:` line.

Examples/UIExplorer/AccessibilityIOSExample.js

@@ -55,7 +55,7 @@ var AccessibilityIOSExample = React.createClass({
   },
 });
 
-exports.title = 'AcccessibilityIOS';
+exports.title = 'AccessibilityIOS';
 exports.description = 'Interface to show iOS\' accessibility samples';
 exports.examples = [
   {