Changes proposed in this pull request:
[x] Add reference for AHK Chile project

• Add reference D4.4 (missing: link)
• Add reference for product sheet
• Update Marie Gering entry
• Update Andra Backhaus entry

The following steps were realized, as well (if applies):
❌ Use in-line comments to explain your code
❌ Write docstrings to your code (example docstring)
❌ For new functionalities: Explain in readthedocs
❌ Write test(s) for your new patch of code (pytests, assertion debug messages)

• Update the CHANGELOG.md
  ❌ Apply black (black . --exclude docs/)
  ❌ Check if benchmark tests pass locally (EXECUTE_TESTS_ON=master pytest)