title: How to replace text of a specific line in a .txt file with Qt?
body: <p>I have this "data.txt" with this text inside:</p>
  
  <pre><code>1;Bob;Patino;43
  /2;Chris;Metsen;46
  /3;Rob;Pardo;37
  /4;Megan;Fox;25
  /5;Cara;Delevingne;21
  </code></pre>
  
  <p>And I want to replace the text of the second line "Metsen" for "Metzen".
  I can do it by rewriting the whole data and it would be easy but maybe not convenient for tons of data.</p>
  
  <p>Is there a way to do it by rewriting just that specific data (ideally using <code>QFile</code> and <code>QTextStream</code>) ?</p>