message: add the missing alt attribute.
diff: @@ -3,7 +3,7 @@ title: Project-level environment variables
  excerpt: By defining environment variables at a project level, they are made available to prebuilds, and optionally to workspaces too.
  date: 2022-01-31
  image: 2022-01-31.jpg
  -alt:
  +alt: Gitpod Dashboard Settings Tab overview
  ---
  <script>
  