Update README.md

Co-authored-by: Clémentine Urquizar <[email protected]>

Author: mdubus

README.md

@@ -123,7 +123,7 @@ module.exports = {
 
 You can enable dark mode by adding `enableDarkMode: true` to your configuration file.
 
-To override the default theme of the searchbar, you can edit your `.vuepress/styles/palette.styl` file.
+To override the default theme of the search bar, you can edit your `.vuepress/styles/palette.styl` file.<br>
 A few variables are available :
 
 ```js