chore: rm external link option

Author: mcanouil

docs/blog/posts/2025-01-20-quarto-github-pages/index.qmd

@@ -13,7 +13,6 @@ image: featured.png
 image-alt: |
   Quarto icon and text logo above GitHub Pages logo.
 toc-depth: 5
-link-external-icon: true
 ---
 
 ![](featured.png){fig-alt="Quarto icon and text logo above GitHub Pages logo." fig-align="center" width="50%"}