Fix featuredImage path to relative reference for Astro schema

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: 2 people

src/content/libraries/en/p5.waves.yaml

@@ -6,6 +6,6 @@ author:
   url: https://prjcts.be
 sourceUrl: https://github.com/seb-prjcts-be/p5.waves
 websiteUrl: https://seb-prjcts-be.github.io/p5.waves/
-featuredImage: /libraries/images/p5.waves.png
+featuredImage: ../images/p5.waves.png
 featuredImageAlt: Wave-based generative artwork created with the p5.waves library
 license: MIT