Update README.md

Author: inokawa

README.md

@@ -23,7 +23,7 @@ The communication between React app and React Native app will be also simplified
 
 - Create React (or Preact) app bundle for WebView automatically in build process of React Native
   - `.js`, `.ts`, `.jsx`, `.tsx`, `.mjs` and `.cjs` will be packed into one source.
-  - NOTE: Only the edits in the entry file of web will invoke rebuild because of the limitation of [metro](https://github.com/facebook/metro)'s build process.
+  - **NOTE: Only the edits in the entry file of web will invoke rebuild because of the limitation of [metro](https://github.com/facebook/metro)'s build process.**
 - Handle communication between React Native and WebView with React hook style
   - With `useWebViewMessage` hook, you can subscribe messages from WebView.
   - With `useNativeMessage` hook, you can subscribe messages from React Native.