Update README.md

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

Author: FabianaCampanari

README.md

@@ -228,6 +228,7 @@ $\huge \color{DeepSkyBlue} \frac{1}{\pi}$ = $\huge \color{DeepSkyBlue} \frac{2\s
 
 [Where]():
 - $\large \color{DeepSkyBlue} \ n \$ : Summation index.
+- $\large \color{DeepSkyBlue} \ n \$
 
 This series converges extraordinarily rapidly, making it highly efficient for calculating $\large \color{DeepSkyBlue} \frac{1}{\pi} \( \pi \)$ to many decimal places. In 1985, William Gosper used this formula to compute $\large \color{DeepSkyBlue} \frac{1}{\pi} \( \pi \)$ to 17 million digits.