Fix broken link to data wipe procedure (#287)

src/guides/factory-reset.html

@@ -30,7 +30,7 @@
           <li><a href="/guides/use-serial-console-windows/">
             Connect via serial console from Windows</a> or <a href="/guides/use-serial-console-linux-macos/">
               connect via serial console from Linux or Mac</a>.</li>
-          <li>Follow the steps on <a href="https://www.home-assistant.io/common-tasks/os/common-tasks/os/#wiping-the-data-disk-from-the-command-line">
+          <li>Follow the steps on <a href="https://www.home-assistant.io/common-tasks/os/#wiping-the-data-disk-from-the-command-line">
             Wiping the data disk via command line</a>.</li>
         </ol></p> </span>
       <h3>Resetting a device to the factory settings with a CM4</h3>