Update README.md

Signed-off-by: Fabiana 🚀  Campanari <113218619+FabianaCampanari@users.noreply.github.com>

Author: FabianaCampanari

README.md

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-### Mid-20th Century – Foundations for Quantum Information
+### Mid-20th Century – [Foundations for Quantum Information]()
 
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 1. **John von Neumann (1932)**  📐
    * Formalized the mathematical framework of quantum mechanics and introduced operator theory.