feat(release): Adjust Examples for 7.21.0 Release Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com> Co-authored-by: yanavasileva <yanavasileva@users.noreply.github.com> Co-authored-by: Miklas Boskamp <20189772+mboskamp@users.noreply.github.com> Co-authored-by: Daniel Kelemen <daniel.kelemen@camunda.com> Co-authored-by: Daniel Kelemen <danielkelemen@users.noreply.github.com> Co-authored-by: venetrius <gergely.juhasz@camunda.com> Co-authored-by: venetrius <gergelygjuhasz@gmail.com> Related-to: https://github.com/camunda/camunda-bpm-platform/issues/3856