Per https://github.com/OVALProject/Language/issues/136

+ added ntsecapi.h guid and gpo ui path information to documentation of each audit subcategory.

+ added logon_claims to auditeventpolicysubcategories_state
+ added removable_storage to auditeventpolicysubcategories_state
+ added central_access_policy_staging to auditeventpolicysubcategories_state