fix(config): updated polyname env variable to match convention and fix typo with it

Author: danbucholtz

config/copy.config.js

@@ -15,7 +15,7 @@ module.exports = {
     dest: '{{WWW}}/assets/fonts'
   },
   copyPolyfills: {
-    src: [`{{ROOT}}/node_modules/ionic-angular/polyfills/${process.env.POLLYFILL_NAME}.js`],
+    src: [`{{ROOT}}/node_modules/ionic-angular/polyfills/${process.env.IONIC_POLYFILL_FILE_NAME}`],
     dest: '{{BUILD}}'
   },
   copySwToolbox: {