Update README.md

Signed-off-by: Fabiana 🚀  Campanari <[email protected]>

Author: FabianaCampanari

README.md

@@ -312,7 +312,7 @@ Ramanujan's deep insights into infinite series and modular forms continue to inf
    $\huge \color{DeepSkyBlue} E_n = -\frac{13.6 \, \text{eV}}{n^2}$
 
 
-   Where:  
+   [Where]():  
    - $$\large \color{DeepSkyBlue} E_n$$ is the energy of the $$n$$-th level.  
    - $$\large \color{DeepSkyBlue} n$$ is the principal quantum number.