Update factory.md (davidgf#24)

Fix template link

Author: EyalPetraro

factory.md

@@ -4,7 +4,7 @@
 We need to create objects without having to specify the exact class of the object that will be created.
 
 ## Solution
-The **Factory** pattern is a specialization of the [Template](template.md) pattern. We start by creating a generic base class where we don't make the "which class" decision. Instead, whenever it needs to create a new object, it calls a method that is defined in a subclass. So, depending on the subclass we use (**factory**), we create objects of one class or another (**products**).
+The **Factory** pattern is a specialization of the [Template](template_method.md) pattern. We start by creating a generic base class where we don't make the "which class" decision. Instead, whenever it needs to create a new object, it calls a method that is defined in a subclass. So, depending on the subclass we use (**factory**), we create objects of one class or another (**products**).
 
 ## Example
 Imagine that you are asked to build a simulation of life in a pond that has plenty of ducks: