added arichtman to using tabi section

README.md

@@ -163,6 +163,7 @@ To learn more about multilingual support, see the [Frequently Asked Questions](h
 | [mikufan.page](https://mikufan.page) | [Nadia](https://github.com/nyadiia) | Personal blog | [Source](https://github.com/nyadiia/mikufan.page) |
 | [tim-boettcher.online](https://tim-boettcher.online/) | [Tim Böttcher](https://codeberg.org/Tim-Boettcher/) | Insights and ramblings of a deafblind programmer | [Source](https://codeberg.org/Tim-Boettcher/tim-boettcher-online/) |
 | [andwati.github.io](https://andwati.github.io) | [Ian Andwati](https://github.com/andwati) | Echos from within | [Source](https://github.com/andwati/andwati.github.io) |
+| [www.richtman.au](https://www.richtman.au) | [Ariel Richtman](https://github.com/arichtman) | Personal tech blog | [Source](https://github.com/arichtman/www.richtman.au) |
 
 Using tabi? Feel free to create a PR and add your site to this list.