docs: fix syntax highlight

Author: atinux

docs/content/docs/1.getting-started/3.deploy.md

@@ -122,7 +122,7 @@ The GitHub Workflow added to your repository is automatically tailored to your p
 We support pnpm, yarn, npm and Corepack. If you use a different package manager, you can customise the generated `nuxthub.yml` GitHub Action.
 
 ::code-collapse
-```yaml [.github/workflows/nuxthub.yml]
+```yml [.github/workflows/nuxthub.yml]
 name: Deploy to NuxtHub
 on: push