fix(win10): read splashscreen correctly from manifest (#358)

Co-authored-by: Jesse MacFadyen <purplecabbage@gmail.com>
diff --git a/cordova-js-src/confighelper.js b/cordova-js-src/confighelper.js
index 2310857..2463103 100644
--- a/cordova-js-src/confighelper.js
+++ b/cordova-js-src/confighelper.js
@@ -25,7 +25,7 @@
 
 var isPhone = (cordova.platformId === 'windows') && WinJS.Utilities.isPhone;
 var isWin10UWP = navigator.appVersion.indexOf('MSAppHost/3.0') !== -1;
-var splashScreenTagName = isWin10UWP ? 'SplashScreen' : (isPhone ? 'm3:SplashScreen' : 'm2:SplashScreen');
+var splashScreenTagName = isWin10UWP ? "uap:SplashScreen" : (isPhone ? "m3:SplashScreen" : "m2:SplashScreen");
 
 function XmlFile (text) {
     this.text = text;