file-encryption.html: Update Kryptor website URL. (#2224)

Author: samuel-lucas6

_includes/sections/file-encryption.html

@@ -60,7 +60,7 @@ <h3>Worth Mentioning</h3>
   <li><a href="https://www.dyne.org/software/tomb/">Tomb</a> - A simple zsh script for making LUKS containers on the commandline.</li>
   <li><a href="https://hat.sh/">Hat.sh</a> - A cross-platform, serverless JavaScript web application that provides secure file encryption using the AES-256-GCM algorithm in your browser. It can also be downloaded and run offline.</li>
     <li>
-      <a href="https://kryptor.co.uk/">Kryptor</a> is a file encryption program for Windows, MacOS, and Linux.
+      <a href="https://www.kryptor.co.uk/">Kryptor</a> - Free and open source file encryption software for Windows, macOS, and Linux.
       {% include badge.html
         color="warning"
         icon="fas fa-exclamation-triangle"