add windows packer repository

README.md

@@ -321,9 +321,8 @@ An `build-packer-templates.yaml` Ansible playbook generates the files for each d
 - [ ] unique model : for efficience, a unique template should be sufficient with a data source with these elements (https://devops.stackexchange.com/q/4312).
 - [ ] random secret for provisonning (https://www.packer.io/docs/templates/engine#template-variables)
 - [ ] remove swap post-processing
-- [ ] docker-compose for automation
 - [ ] add versions of post-processing and images meta-datas
-- [ ] include Windows templates
+- [ ] include Windows templates: see [rgl/windows-vagrant](https://github.com/rgl/windows-vagrant)
 
 Wath are the variants in those templates?