Fix: Update README.md => there is no longer a live demo for this sample

Author: Tom-Dynamsoft

hello-world/angular/README.md

@@ -13,7 +13,6 @@ In this guide, we will be using [`dynamsoft-barcode-reader-bundle 10.2.1000`](ht
 ## Official sample
 
 * <a target = "_blank" href="https://github.com/Dynamsoft/barcode-reader-javascript-samples/tree/main/hello-world/angular">Hello World in Angular - Source Code</a>
-* <a target = "_blank" href="https://demo.dynamsoft.com/Samples/DBR/JS/hello-world/angular/dist/dbrjs-sample-angular/browser/">Hello World in Angular - Demo</a>
 
 ## Preparation
 Make sure you have [node](https://nodejs.org/) and [Angular CLI](https://cli.angular.io/) installed. 
@@ -418,4 +417,4 @@ To get more help on the Angular CLI use `ng help` or go check out the [Angular C
 
 ## Support
 
-If you have any questions, feel free to [contact Dynamsoft Support](https://www.dynamsoft.com/company/contact?utm_source=sampleReadme).
+If you have any questions, feel free to [contact Dynamsoft Support](https://www.dynamsoft.com/company/contact?utm_source=sampleReadme).