Improve README grammar (#10091)

readme.md

@@ -1,7 +1,7 @@
 <p align="center">
   <a href="https://roadmap.sh/"><img src="public/img/brand.png" height="128"></a>
   <h2 align="center"><a href="https://roadmap.sh">roadmap.sh</a></h2>
-  <p align="center">Community driven roadmaps, articles and resources for developers<p>
+  <p align="center">Community-driven roadmaps, articles and resources for developers<p>
   <p align="center">
     <a href="https://roadmap.sh/roadmaps">
     	<img src="https://img.shields.io/badge/%E2%9C%A8-Roadmaps%20-0a0a0a.svg?style=flat&colorA=0a0a0a" alt="roadmaps" />