Update README.md

Author: rparak

README.md

@@ -151,7 +151,7 @@ Roman.Parak@outlook.com
 @misc{RomanParak_Unity3D,
   author = {Roman Parak},
   title = {A digital-twins in the field of industrial robotics integrated into the unity3d development platform},
-  year = {2020-2023},
+  year = {2020-2024},
   publisher = {GitHub},
   journal = {GitHub repository},
   howpublished = {\url{https://github.com/rparak/Unity3D_Robotics_Overview}}