update license used in sample

Author: a362758199

hello-world/README.md

@@ -12,8 +12,7 @@ In this example, you will learn the minimum codes required to initialize and set
 
 Let's quickly break down the methods used in order:
 
-- `Dynamsoft.License.LicenseManager.initLicense()`: This method initializes the license for using the SDK in the application. Note that the string "**DLS2eyJvcmdhbml6YXRpb25JRCI6IjIwMDAwMSJ9**" used in this example points to an online license that requires a network connection to work.
-
+- `Dynamsoft.License.LicenseManager.initLicense()`: This method initializes the license for using the SDK in the application.
 - `Dynamsoft.CVR.CaptureVisionRouter.createInstance()`: This method creates a `CaptureVisionRouter` object `router` which controls the entire process in three steps:
   - **Retrieve Images from the Image Source**
     - `router` connects to the image source through the [`Image Source Adapter`](https://www.dynamsoft.com/capture-vision/docs/core/architecture/input.html#image-source-adapter?lang=js) interface with the method `setInput()`.