Fixed rol formula

src/business_case.tex

@@ -153,7 +153,7 @@ As the company’s presence in the market is maturing, it is expected the cost o
 
 Return on Investment:
 \begin{gather*}
-	Rol = \frac{Net return on investment}{Net cost} \times 100
+	Rol = \frac{Net~return~on~investment}{Net~cost} \times 100
 \end{gather*}
 
 \subsection{Financing}