Update using-organization-roles.md

Author: hasnu123hasnu

content/organizations/managing-peoples-access-to-your-organization-with-roles/using-organization-roles.md

@@ -5,7 +5,7 @@ versions:
   fpt: '*'
   ghec: '*'
   ghes: '*'
-permissions: 'Organization owners{% ifversion ghec %} and users with the "Manage custom organization roles" permission{% endif %}'
+permissions: 'Organization owners{% ifversion ghec %} and users with the "Manage custom organization roles" permission{% endif %}.'
 product: 'Organizations on {% data variables.product.prodname_free_team %}, {% data variables.product.prodname_pro %}, {% data variables.product.prodname_team %}, {% data variables.product.prodname_ghe_cloud %}, and {% data variables.product.prodname_ghe_server %}'
 shortTitle: Use organization roles
 ---