Add missing logo key to frontmatter

Author: boazsender

topics/remix-stacks/index.md

@@ -2,6 +2,7 @@
 display_name: Remix Stacks
 short_description: Remix Stacks are production-ready application starters from the https://remix.run team and community.
 topic: remix-stacks
+logo: remix-stacks.png
 url: https://remix.run/docs/en/main/guides/templates#stacks
 ---
 Remix stacks are production-ready [remix templates](https://remix.run/docs/en/main/guides/templates) that have things like CI/CD pipelines, databases and hosting platforms baked in.