win_msi - Don't list choices twice (#5684)

* win_msi - Dont list choices twise

http://docs.ansible.com/ansible/win_msi_module.html shows

Choices:
True
True
False
False

As the yes/no are expanded to true/false by the docs generation

* Update win_msi.py

lib/ansible/modules/windows/win_msi.py

@@ -55,9 +55,7 @@ options:
             - Specify whether to wait for install or uninstall to complete before continuing.
         choices:
             - true
-            - yes
             - false
-            - no
         default: false
 author: Matt Martz
 '''