Merge branch '517452-python-getting-started-improvement' into 'master'

Improve Python getting started guide

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/180535



Merged-by: Mohamed Hamda <mhamda@gitlab.com>
Approved-by: Mohamed Hamda <mhamda@gitlab.com>
Reviewed-by: Fred de Gier <fdegier@gitlab.com>
Reviewed-by: Mohamed Hamda <mhamda@gitlab.com>
Co-authored-by: fdegier <fdegier@gitlab.com>