auto: Update website

Author: nipreps-bot

contributing/submission/index.html

@@ -630,7 +630,7 @@ <h2 id="step-3-prepare-your-credentials-for-authentication">Step 3: Prepare your
 </tr>
 </tbody>
 </table>
-<div class="admonition critical">
+<div class="admonition danger">
 <p class="admonition-title">Make sure you store both tokens safely and that you will be able to retrieve them later</p>
 </div>
 <p><strong>At this point, you can set up your credentials</strong></p>