Deal with blockquotes being unstyled on the site

docs/src/content/pages/github-mode.mdoc

@@ -114,10 +114,14 @@ Keystatic will only list branches starting with `my-prefix/` in the Admin UI, an
 
 When you authorize on a server and get the following error from GitHub, you need to modify the GitHub application settings.
 
+{% aside icon="" %}
+
 > Be careful!
 > The `redirect_uri` is not associated with this application.
 > The application might be misconfigured or could be trying to redirect you to a website you weren't expecting.
 
+{% /aside %}
+
 To add a redirect URL:
 
 1. Go to the [list of "Installed Github Apps"](https://docs.github.com/en/apps/using-github-apps/reviewing-and-modifying-installed-github-apps#navigating-to-the-github-app-you-want-to-review-or-modify)