docs: showcase housekeeping

Author: jackyzha0

docs/showcase.md

@@ -6,29 +6,18 @@ Want to see what Quartz can do? Here are some cool community gardens:
 
 - [Quartz Documentation (this site!)](https://quartz.jzhao.xyz/)
 - [Jacky Zhao's Garden](https://jzhao.xyz/)
-- [Socratica Toolbox](https://toolbox.socratica.info/)
-- [Morrowind Modding Wiki](https://morrowind-modding.github.io/)
 - [Aaron Pham's Garden](https://aarnphm.xyz/)
 - [The Pond](https://turntrout.com/welcome)
-- [Pelayo Arbues' Notes](https://pelayoarbues.com/)
+- [Eilleen's Everything Notebook](https://quartz.eilleeenz.com/)
+- [Morrowind Modding Wiki](https://morrowind-modding.github.io/)
 - [Stanford CME 302 Numerical Linear Algebra](https://ericdarve.github.io/NLA/)
+- [Socratica Toolbox](https://toolbox.socratica.info/)
 - [A Pattern Language - Christopher Alexander (Architecture)](https://patternlanguage.cc/)
-- [oldwinter の数字花园](https://garden.oldwinter.top/)
-- [Eilleen's Everything Notebook](https://quartz.eilleeenz.com/)
-- [🧠🌳 Chad's Mind Garden](https://www.chadly.net/)
-- [Pedro MC Fernandes's Topo da Mente](https://www.pmcf.xyz/topo-da-mente/)
-- [Mau Camargo's Notkesto](https://notes.camargomau.com/)
 - [Sideny's 3D Artist's Handbook](https://sidney-eliot.github.io/3d-artists-handbook/)
 - [Brandon Boswell's Garden](https://brandonkboswell.com)
-- [Scaling Synthesis - A hypertext research notebook](https://scalingsynthesis.com/)
-- [Simon's Second Brain: Crafted, Curated, Connected, Compounded](https://brain.ssp.sh/)
 - [Data Engineering Vault: A Second Brain Knowledge Network](https://vault.ssp.sh/)
-- [Data Dictionary 🧠](https://glossary.airbyte.com/)
 - [🪴Aster's notebook](https://notes.asterhu.com)
 - [Gatekeeper Wiki](https://www.gatekeeper.wiki)
 - [Ellie's Notes](https://ellie.wtf)
-- [🥷🏻🌳🍃 Computer Science & Thinkering Garden](https://notes.yxy.ninja)
 - [Eledah's Crystalline](https://blog.eledah.ir/)
 - [🌓 Projects & Privacy - FOSS, tech, law](https://be-far.com)
-- [Zen Browser Docs](https://docs.zen-browser.app)
-- [🪴8cat life](https://8cat.life)