fix: url / cover img / excerpt

Author: mbifulco

src/data/newsletters/design-invisible.mdx renamed to src/data/newsletters/good-ux-is-invisible.mdx

@@ -1,10 +1,10 @@
 ---
 title: "Design's Shakespearean Curse: Good UX Should Never Be Noticed"
-excerpt:
+excerpt: "The best UX design goes unnoticed. Learn how invisible design shapes digital experiences, and why great designers embrace the paradox of their work going unseen."
 date: 02-25-2025
 tags: [design, philosophy]
-slug: design-invisible
-coverImagePublicId: newsletters/design-invisible/cover
+slug: good-ux-is-invisible
+coverImagePublicId: newsletters/good-ux-is-invisible/cover
 ---
 
 ## The Big Idea