update

Author: iSpring

tutorials/use-extract-text-webpack-plugin/README.md

@@ -1,8 +1,7 @@
 <div align="center">
     <img width="200" height="200" src="https://github.com/iSpring/babel-webpack-react-redux-tutorials/tree/develop/tutorials/use-extract-text-webpack-plugin/images/plugin.svg">
     <a href="https://github.com/webpack/webpack">
-        <img width="200" height="200"
-        src="https://webpack.js.org/assets/icon-square-big.svg">
+        <img width="200" height="200" src="https://github.com/iSpring/babel-webpack-react-redux-tutorials/tree/develop/tutorials/use-extract-text-webpack-plugin/images/webpack.svg">
     </a>
 </div>