Update README.md

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

Author: FabianaCampanari

README.md

@@ -285,7 +285,8 @@ The **graphical method** for solving simple linear programming (LP) problems inv
 
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- 4. **Evaluate the Objective Function at Each Vertex:** Substitute the coordinates of each vertex into the objective function to find the value of the objective function at that point.
+4.  **Evaluate the Objective Function at Each Vertex:** Substitute the coordinates of each vertex into the objective function to find the value of the objective function at that point.
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