title: convert html to pdf file using wkhtmltopdf in a single command
body: <p>I have some html files as :</p>
  
  <p>1.html, 2.html, 3.html</p>
  
  <p>I want to convert it into 1.pdf, 2.pdf and 3.pdf</p>
  
  <p>Currently I am usingthe below command to convert this html file to pdf files manually one by one using :</p>
  
  <pre><code>wkhtmltopdf.exe 1.html 1.pdf
  wkhtmltopdf.exe 2.html 2.pdf
  wkhtmltopdf.exe 3.html 3.pdf
  </code></pre>
  
  <p>How to convert all these html files into pdf in a single go.</p>