Demo app config: buildTarget fix

Author: dhilt

demo/angular.json

@@ -22,8 +22,13 @@
             "main": "main.ts",
             "polyfills": "polyfills.ts",
             "tsConfig": "tsconfig.json",
-            "assets": ["favicon.ico", "assets"],
-            "styles": ["styles.css"],
+            "assets": [
+              "favicon.ico",
+              "assets"
+            ],
+            "styles": [
+              "styles.css"
+            ],
             "scripts": []
           },
           "configurations": {
@@ -64,10 +69,10 @@
           "builder": "@angular-devkit/build-angular:dev-server",
           "configurations": {
             "production": {
-              "browserTarget": "demo:build:production"
+              "buildTarget": "demo:build:production"
             },
             "development": {
-              "browserTarget": "demo:build:development"
+              "buildTarget": "demo:build:development"
             }
           },
           "defaultConfiguration": "development"
@@ -78,4 +83,4 @@
   "cli": {
     "analytics": false
   }
-}
+}