updated readme

Author: justinjung04

README.md

@@ -2,7 +2,7 @@
 
 [WebViewer](https://www.pdftron.com/webviewer) is a powerful JavaScript-based PDF Library that's part of the [PDFTron PDF SDK](https://www.pdftron.com). It provides a slick out-of-the-box responsive UI that interacts with the core library to view, annotate and manipulate PDFs that can be embedded into any web project.
 
-![WebViewer UI](./src/assets/img/webviewer-ui.png)
+![WebViewer UI](./public/assets/img/webviewer-ui.png)
 
 This repo is specifically designed for any users interested in integrating WebViewer into React project. This project was generated with [Create React App](https://github.com/facebook/create-react-app). See [Create React App documentation](https://facebook.github.io/create-react-app/docs/getting-started) for more information.