message: Updated Pricing Page (Tiles, Self hosted)
  * Added features to pricing tiles,
  updated supported self-hosted kubernetes engines
  * added AKS to the header for self hosted pricing info
diff: <header class="tight">
  <h1>Self-hosted plans</h1>
  <p>
  - Install Gitpod Self-Hosted on <strong>GKE, EKS </strong> and
  + Install Gitpod Self-Hosted on <strong>GKE, EKS, AKS </strong> and
  <strong>K3s</strong>.
  </p>
  </header>
  