Issue with the 2022 sustainability chapter - Fix Broken Link to planetcentricdesign.com

[LarsFlieger]

At https://almanac.httparchive.org/en/2022/sustainability#designing-for-stakeholders

The link to planetcentricdesign.com is currently broken as the website appears to be down.

There are some links in web archive: https://web.archive.org/web/20240000000000*/planetcentricdesign.com