title: How to change Laravel Validation message for max file size in MB instead of KB?
body: <p>Laravel comes with this validation message that shows file size in kilobytes:</p>
  
  <pre><code>file' =&gt; 'The :attribute may not be greater than :max kilobytes.',
  </code></pre>
  
  <p>I want to customize it in a way that it shows megabytes instead of kilobytes. 
  So for the user it would look like:</p>
  
  <blockquote>
    <p>"The document may not be greater than 10 megabytes."</p>
  </blockquote>
  
  <p>How can I do that?</p>