### Tasks
- [x] in dev docu: build and then download build archive is very strange. remove mention of download
- [x] need to updated dev docu: run tests should now be done using nox, also needs to mention starting db
- [x] user guide: "python -m exasol_transformers_extension.deploy language-container --version 0.5.0 ..." tries to download slc from github but does not seem to exist (might be a wrong name issue)
- [x] deployment.deployment_utils.py : should be: GH_RELEASE_URL = "https://github.com/exasol/transformers-extension/releases/tag" (No this is correct as is)