Update README.md

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

Author: FabianaCampanari

README.md

@@ -799,7 +799,7 @@ Convert inequalities into equalities to draw the lines:
 
 <br>
 
-[1](). $x_1 + 3x_2 = 7$
+### [1](). $x_1 + 3x_2 = 7$
    - If $x_1 = 0 \Rightarrow x_2 = \frac{7}{3} \approx 2.33$
    - If $x_2 = 0 \Rightarrow x_1 = 7$
   
@@ -813,7 +813,7 @@ x_1 + 3x_2 = 7$
   
 <br><br>
 
-[2](). $2x_1 + 2x_2 = 8$
+### [2](). $2x_1 + 2x_2 = 8$
    - If $x_1 = 0 \Rightarrow x_2 = 4$
    - If $x_2 = 0 \Rightarrow x_1 = 4$