component_guide: Remove reference to `packaging-tools` and `gitlab-rulez` repositories

import-debian-package and gitlab-rulez are now provided by apertis-dev-tools package, which is installed in BaseSDK, SDK images and package-source-builder container.

Fixes some typo.

Depends: pkg/apertis-dev-tools!17 (merged)
Fixes: T7925

Signed-off-by: Frédéric Danis frederic.danis@collabora.com