Update name change.

Author: techy4shri

README.md

@@ -1,6 +1,7 @@
 # **OpenModelica Simulation Desktop App**
 This project is designed to streamline the process of running simulations generated from OpenModelica models through a user-friendly **Python GUI** application built with **PyQt6**.
 For detailed documentation, including model changes, code improvements, and troubleshooting, visit the [**Project Wiki**](https://github.com/techy4shri/OpenModelica-GUI/wiki).
+Renamed OM-Sim, earlier named OpenModelica-GUI.
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 The task involves:
 1. **Compiling a model** (e.g., TwoConnectedTanks) using OpenModelica to create an executable.