fix typo

(cherry picked from commit 36a3388a3a)

CHANGELOG.md

@@ -142,7 +142,7 @@ Ansible Changes By Release
 * Now deprecated configuration options issue warnings when set.
 * Removed unused and deprecated config option `pattern`
 * Updated the copy of six bundled for modules to use from 1.4.1 to 1.10.0
-* The `include_dir` var is not a global anymore, as we now allow multiple inventory sources, it is now host dependant.
+* The `inventory_dir` var is not a global anymore, as we now allow multiple inventory sources, it is now host dependant.
   This means it cannot be used wherever host vars are not permitted, for example in task/handler names.
 * Fixed a cornercase with ini inventory vars.  Previously, if an inventory var
   was a quoted string with hash marks ("#") in it then the parsed string