Update README.md

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

Author: FabianaCampanari

README.md

@@ -626,7 +626,7 @@ x_2 = \text{quantity produced of product P2}
 
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-[Objective Function]():
+#### 1a. [Objective Function]():
 
 ### Maximize total profit: