Update README.md

Author: mohdibntarek

README.md

@@ -1,6 +1,9 @@
-# TopOpt.jl 
 
-![image](https://github.com/JuliaTopOpt/TopOpt.jl/assets/19524993/585ca4eb-83df-48d4-850c-1debc3d93eff)
+<p align="center">
+  <img src="https://github.com/JuliaTopOpt/TopOpt.jl/assets/19524993/585ca4eb-83df-48d4-850c-1debc3d93eff" />
+</p>
+
+# TopOpt.jl
 
 [![Actions Status](https://github.com/JuliaTopOpt/TopOpt.jl/actions/workflows/CI.yml/badge.svg)](https://github.com/juliatopopt/TopOpt.jl/actions)
 [![Documentation](https://img.shields.io/badge/doc-latest-blue.svg)](https://juliatopopt.github.io/TopOpt.jl/dev)