fix ref

Author: kylegalbraith

.github/workflows/deploy-fly.yml

@@ -33,7 +33,7 @@ jobs:
           context: ./node/pnpm-fastify
           platforms: linux/amd64
           push: true
-          tag: registry.fly.io/depot-examples-pnpm-fastify:latest
+          tags: registry.fly.io/depot-examples-pnpm-fastify:latest
 
       - name: Deploy to Fly.io
         run: flyctl deploy --image registry.fly.io/depot-examples-pnpm-fastify:latest