message: Updates Contributing MD
diff: ## Project members
  -- Create a Ticket for the Issue
  -- Create a branch for that ticket with the naming:
  - `feature/{ticket-no}-{description-seperated-by-spaces}`
  +- Create an issue
  +- Create a branch for that issue with the naming:
  + `feature/{ticket-no}-{description-separated-by-dashes}`
  - Develop your code
  - Commit and push in regular intervalls
  - Run the tests locally
  - Open a Pull-Request
  - If CI/Coverage give their OK we can merge
  -- Thr PR gets merged to `develop`, which will push a new Docker-Image-Version
  +- The PR gets merged to `develop`, which will push a new Docker-Image-Version with the tag `develop` and `latest`
  - The staging-system will then be updated to the latest Image from Docker-Hub
  - If we have enough features we will merge the `develop` into the `master` branch, which will add
  a new 'stable' image on Docker-Hub.
  