Demo app links updated in readme

Author: Manu Chaudhary

README.md

@@ -205,7 +205,7 @@ const onSuccess = res => {
 </IKContext>
 ```
 ## Demo Application
-The fastest way to get started is by running the demo application. You can run the code locally. The source code is in samples/sample-app. For the instructions in [readme.md](https://github.com/imagekit-developer/imagekit-react/blob/test-case/samples/sample-app/README.md) file within [samples/sample-app](https://github.com/imagekit-developer/imagekit-react/tree/test-case/samples/sample-app) folder.
+The fastest way to get started is by running the demo application. You can run the code locally. The source code is in samples/sample-app. For the instructions in [readme.md](https://github.com/imagekit-developer/imagekit-react/blob/master/samples/sample-app/README.md) file within [samples/sample-app](https://github.com/imagekit-developer/imagekit-react/tree/master/samples/sample-app) folder.
 
 ## Error Handling
 We are using Error Boundaries to handle errors in the UI. `ErrorBoundary` is used to handle errors anywhere in their child component tree, log those errors, and display a fallback UI instead of the component tree that crashed. example: