update scratch readme

Author: bcpeinhardt

registry/coder/templates/scratch/README.md

@@ -1,7 +1,7 @@
 ---
 display_name: Scratch
 description: A minimal starter template for Coder
-icon: ../../../../.emojis/1f4e6.png
+icon: ../../../../.icons/1f4e6.png
 maintainer_github: coder
 verified: true
 tags: []