Update Android instructions

Addresses #373

README.md

@@ -154,7 +154,8 @@ to generate your own certificates and do the same.
   <zoffline ip> secure.zwift.com
   <zoffline ip> cdn.zwift.com
   ```
-  * Run "Virtual Hosts", select the created `hosts.txt` file, fully close (touch the "overview" button and swipe up) the app and run it again
+  * Turn off "Private DNS" in Android settings
+  * Run "Virtual Hosts" and select the created `hosts.txt` file
   * Optionally, instead of using the "Virtual Hosts" app, you can create a ``fake-dns.txt`` file in the ``storage`` directory and set the "DNS 1" of your phone Wi-Fi connection to the IP address of the PC running zoffline
   * Note: If you know what you're doing and have a capable enough router you can adjust your router to alter these DNS records instead of using the "Virtual Hosts" app or changing your phone DNS.
 * Patch after every installation or update:
@@ -304,7 +305,8 @@ To enable support for multiple users perform the steps below:
   <zoffline ip> secure.zwift.com
   ```
   * Important: don't add ``cdn.zwift.com`` to ``hosts.txt``, Companion needs to download images from the official server
-* Run "Virtual Hosts", select the created ``hosts.txt`` file, fully close (touch the "overview" button and swipe up) the app and run it again
+* Turn off "Private DNS" in Android settings
+* Run "Virtual Hosts" and select the created ``hosts.txt`` file
 * Optionally, instead of using the "Virtual Hosts" app, you can create a ``fake-dns.txt`` file in the ``storage`` directory and set the "DNS 1" of your phone Wi-Fi connection to the IP address of the PC running zoffline
 * Note: If you know what you're doing and have a capable enough router you can adjust your router to alter these DNS records instead of using the "Virtual Hosts" app or changing your phone DNS.