scripts: fix VERSION_QUAD corner case in windows resource
scripts: fix VERSION_QUAD corner case in windows resource

When the git checkout is dirty on top of a git tag (i.e., v20.10.6.m),
the VERSION_QUAD was keeping a trailing comma.
Now the trailing comma is stripped.

Signed-off-by: Tibor Vass <3f1326dff4d85ad4ec938fb33f64575ace96db26@docker.com>

docker/cli,thaJeztah/cli,thaJeztah/cli,cpuguy83/cli,cpuguy83/cli,docker/cli