title: how to change uppercase to lowercase with regex javascript
body: <p>It could be any string, it should match only the UPPERCASE part and change to lowercase, for example:</p>
  
  <p><code>"It's around August AND THEN I get an email"</code></p>
  
  <p>become </p>
  
  <p><code>"It's around August and then I get an email"</code></p>
  
  <p>as you can see the word <code>It's</code>, <code>August</code> and <code>I</code> should be ignored </p>