Fix small typo

While reading one of the docs I found this small typo.

docsite/rst/playbooks_loops.rst

@@ -550,7 +550,7 @@ Loops and Includes
 ``````````````````
 
 In 2.0 you are able to use `with_` loops and task includes (but not playbook includes), this adds the ability to loop over the set of tasks in one shot.
-There are a couple of things that you need to keep in mind, a included task that has it's own `with_` loop will overwrite the value of the special `item` variable.
+There are a couple of things that you need to keep in mind, a included task that has its own `with_` loop will overwrite the value of the special `item` variable.
 So if you want access to both the include's `item` and the current task's `item` you should use `set_fact` to create a alias to the outer one.::