Update README.md

Author: hschickdevs

README.md

@@ -22,7 +22,7 @@
     <li><a href="#installation">Installation</a></li>
     <li><a href="#usage">Usage</a></li>
     <li><a href="#uninstallation">Uninstallation</a></li>
-    <li><a href="#feature_roadmap">Roadmap</a></li>
+    <li><a href="#feature roadmap">Roadmap</a></li>
   </ol>
 </details>