title: How to replace text / string in a file with robotframework
body: <p>I have copied a file in my current working directory. This file has a text:</p>
  
  <blockquote>
    <p>order value=78</p>
  </blockquote>
  
  <p>I want to replace this text with new one</p>
  
  <blockquote>
    <p>parcel value= 500</p>
  </blockquote>
  
  <p>How can I do this?</p>