Update README.md

Author: ErfanRzt

README.md

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 # LENNA Mobile Robot Simulation
 
+LENNA Mobile Robot is a differential-drive mobile robot platform intended for research and education. The repository maintains equivalent ROS1 and ROS2 simulations to support both legacy and modern robotics workflows.
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-LMR1 is a differential-drive mobile robot platform intended for research and education. The repository maintains equivalent ROS1 and ROS2 implementations to support both legacy and modern robotics workflows.
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 > [!NOTE]\
-> Use the `Interactive URDF Viewer` to spawn the URDF online. Please note that it might take several seconds to fully bring up the LMR1 robot model.
+> Use the [`Interactive URDF Viewer`](https://lenna-robotics-research-lab.github.io/LMR1-Simulation/) to spawn the URDF online. Please note that it might take several seconds to fully bring up the LENNA Mobile Robot model.
 
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