Update README.md

Author: Cube-J

README.md

@@ -71,7 +71,7 @@ The following shows a few ways to download the SDK.
 
 - From the website
 
-  [Download the JavaScript ZIP Package](https://www.dynamsoft.com/camera-enhancer/downloads/1000021-confirmation/?utm_source=npm)
+  [Download the JavaScript ZIP Package](https://www.dynamsoft.com/camera-enhancer/downloads/1000021-confirmation/?utm_source=github)
 
 - yarn