Merge pull request #220 from Quantum-Software-Development/FabianaCampanari-patch-1

Update README.md

Author: FabianaCampanari

README.md

@@ -167,7 +167,9 @@ Feel free to explore, contribute, and share your insights!
 
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-8. **John von Neumann (1932)**  
+8. **John von Neumann (1932)**  <br>
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    * Formalized the mathematics of quantum mechanics and introduced operator theory.
 
    Formula for the density matrix in Hilbert space: