update umap documentation

[Josee-xav]

https://docs.umap-project.org/en/stable/deploy/docker/

has
"image: umap/umap:2.9.3 "
when the latest is 3.6.3.

i was playing with old umap wondering why stuff is not working properly.

[davidbgk]

Source documentation is here if you want to provide an update: https://github.com/umap-project/umap/blob/master/docs/deploy/docker.md