Update README.md

Author: yushulx

README.md

@@ -52,4 +52,5 @@ Run `ng build` to build the project. The build artifacts will be stored in the `
 
 
 ## Blog
-- [How to Build Angular Barcode and QR Code Scanner Apps from Scratch](https://www.dynamsoft.com/codepool/angular-barcode-qr-code-scanner.html)
+- [How to Build an Angular Barcode & QR Code Detection App: A Step-by-Step Guide](https://www.dynamsoft.com/codepool/angular-barcode-qr-code-scanner.html)
+- [How to Detect and Rectify Documents in Angular Web Applications](https://www.dynamsoft.com/codepool/angular-document-edge-detection-rectification.html)