title: Remove everything except this text by regex
body: <p>I have a long list of these lines:</p>
  
  <pre><code>https://123.com/@jcandelas/comicsnow!-jvttr855z/-/a-re0Um1B6T9anGRJvCUOLcA:a:37070831-/0
  https://123.com/@mccluret/raise-the-apple-b1b1lv45z/-/a-p6LFvKnsSzmeM0wqRbq-nw:a:3679520-/0
  </code></pre>
  
  <p>I want to remove everything except 
  https:// 123.com/@*/
  where * can be anything </p>
  
  <p>(ignore the extra space after https:// as stackoverflow does not allow me to post more than 2 links</p>
  
  <p>so the end result for the 2 above links should be</p>
  
  <pre><code>https:// 123.com/@mccluret/
  
  https:// 123.com/@jcandelas/
  </code></pre>
  
  <p>Please give me the find and replace query I need to enter to do this.</p>