shorten blog post description for listing card

Author: cderv

docs/blog/posts/2026-04-13-chrome-headless-shell/index.qmd

@@ -1,9 +1,8 @@
 ---
 title: "Chrome Headless Shell in Quarto"
 description: |
-  Quarto now uses Chrome Headless Shell instead of Puppeteer-bundled Chromium
-  for rendering diagrams and screenshots. It's smaller, works on arm64 Linux,
-  and avoids common issues in Docker and WSL environments.
+  Quarto 1.9 replaces Puppeteer Chromium with Chrome Headless Shell —
+  smaller, arm64-ready, and Docker-friendly.
 author: Christophe Dervieux
 date: "2026-04-13"
 categories: