Add academic community example (cotes2020#2289)

Adds [https://ztjona.github.io/](https://ztjona.github.io/) to the list
of academic community examples.

Author: ztjona

README.md

@@ -134,6 +134,7 @@ Feel free to add your own page(s) by sending a PR.
 <a href="https://www.zla.app/" target="_blank">★</a>
 <a href="https://stavros.github.io" target="_blank">★</a>
 <a href="https://ericslyman.com" target="_blank">★</a>
+<a href="https://ztjona.github.io/" target="_blank">★</a>
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