title: Django Admin Detail Page Link to an External URL
body: <p>I am trying to link to a page OUTSIDE of my django admin side with the following code for a function that is added as as <code>read_only</code> field of my admin interface. </p>
  
  <pre class="lang-py prettyprint-override"><code>    def website(self, preset):
          if preset.he_school.profile.admissions_url:
              return format_html(
                  f"&lt;a href='{preset.he_school.profile.url}'&gt;Link&lt;/a&gt;"
              )
  </code></pre>
  
  <p>The problem is I always get URLs of the resulting link with the path to this page prepended to the URL I actually want to send people to: <code>386/change/www.sc.edu/admissions</code> instead, I just want to send people to <code>www.sc.edu/admissions</code></p>
  
  <p>How can I prevent this from happening?</p>