title: How to replace a string with old string+appended string in vim
body: <p>This is the text in my file, which I'm editing with vim:</p>
  
  <p><a href="https://i.stack.imgur.com/111A2.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/111A2.png" alt="enter image description here"></a></p>
  
  <p>I want to change it to the the following content:</p>
  
  <p><a href="https://i.stack.imgur.com/hKtpX.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/hKtpX.png" alt="enter image description here"></a></p>
  
  <p>I have tried using this regular expression <code>:%s/^.*$/\g&lt;0&gt;,\g&lt;0&gt;/g</code>, but it's not working..</p>