Minor change to the README.md

Author: DanielDauner

README.md

@@ -4,5 +4,5 @@
     <source media="(prefers-color-scheme: light)" srcset="assets/logo/123D_logo_transparent_black.svg" width="500">
     <img alt="Logo" src="assets/logo/123D_logo_transparent_black.svg" width="500">
   </picture>
-  <h2 align="center">123D: One Library for 2D and 3D Driving Dataset</h1>
+  <h2 align="center">123D: One Library for 2D and 3D Driving Datasets</h1>
 </h1>