anchor.diff:        <td>
           Include the host's GCP meta-data as meta-data.
           <p class="Docs__api-param-eg"><em>Default:</em> <code>false</code></p>
  -        <p class="Docs__api-param-eg"><em>Environment variable:</em> <code>BUILDKITE_AGENT_META_DATA_EC2_TAGS</code></p>
  -        <p class="Docs__api-param-eg"><a href="#tags-from-ec2-tags"><em>Use instead:</em> <code>tags-from-ec2-tags</code></a></p>
  +        <p class="Docs__api-param-eg"><em>Environment variable:</em> <code>BUILDKITE_AGENT_META_DATA_GCP_TAGS</code></p>
  +        <p class="Docs__api-param-eg"><a href="#tags-from-gcp-tags"><em>Use instead:</em> <code>tags-from-gcp-tags</code></a></p>
         </td>
       </tr>
   
  
positive.code:       </td>
      </tr>
  
      <tr>
        <th><code>tags-from-host</code></th>
        <td>
          Include the host's meta-data as tags (hostname, machine-id, and os).
  
negative.code:       </td>
      </tr>
  
      <tr id="tags-from-gcp">
        <th><code>tags-from-gcp</code></th>
        <td>
          Include the host's Google Cloud meta-data as tags (instance-id, machine-type, preemptible, project-id, region, and zone).
  