docs(readme): improve grammar

Author: remarkablemark

README.md

@@ -401,7 +401,7 @@ parse('<br>', {
 ### htmlparser2
 
 > [!WARNING]
-> `htmlparser2` options _**don't work** on the client-side_ (browser) and they _**only work** on the server-side_ (Node.js). By overriding the options, it can break universal rendering.
+> `htmlparser2` options _**don't work** on the client-side_ (browser); they _**only work** on the server-side_ (Node.js). By overriding the options, it can break universal rendering.
 
 Default [htmlparser2 options](https://github.com/fb55/htmlparser2/wiki/Parser-options#option-xmlmode) can be overridden in >=[0.12.0](https://github.com/remarkablemark/html-react-parser/tree/v0.12.0).