doc: fix arguments for install, upgrade and remove

[kontura]

For: #1602
For: #1498

Also adds some clarification to group_package_types docs.

[packit-as-a-service]

We were not able to find or create Copr project packit/rpm-software-management-dnf5-1621 specified in the config with the following error:

Cannot create a new Copr project (owner=packit project=rpm-software-management-dnf5-1621 chroots=['fedora-rawhide-x86_64']): Copr: 'packit/rpm-software-management-dnf5-1621' already exists. Copr HTTP response is 400 BAD REQUEST.

---

Unless the HTTP status code above is >= 500, please check your configuration for:

1. typos in owner and project name (groups need to be prefixed with @)
2. whether the project name doesn't contain not allowed characters (only letters, digits, underscores, dashes and dots must be used)
3. whether the project itself exists (Packit creates projects only in its own namespace)
4. whether Packit is allowed to build in your Copr project
5. whether your Copr project/group is not private

[jan-kolarik]

Thanks a lot for improving the docs!