Add info about Mullvad's DAITA

Co-authored-by: redoomed1 <161974310+redoomed1@users.noreply.github.com>
Signed-off-by: Triple T <78900789+I-I-IT@users.noreply.github.com>

docs/vpn.md

@@ -279,7 +279,7 @@ Mullvad has published [App Store](https://apps.apple.com/app/id1488466513) and [
 
 #### :material-information-outline:{ .pg-blue } Additional Notes
 
-Mullvad is very transparent about which nodes they [own or rent](https://mullvad.net/en/servers). They use [ShadowSocks](https://shadowsocks.org) in their ShadowSocks + OpenVPN (Desktop) and Wireguard over Shadowsocks configuration, making them more resistant against firewalls with [Deep Packet Inspection](https://en.wikipedia.org/wiki/Deep_packet_inspection) trying to block VPNs. Supposedly, [China has to use a different method to block ShadowSocks servers](https://github.com/net4people/bbs/issues/22).
+Mullvad is very transparent about which nodes they [own or rent](https://mullvad.net/en/servers). They also provide the option to enable Defense Against AI-guided Traffic Analysis ([DAITA](https://mullvad.net/en/blog/daita-defense-against-ai-guided-traffic-analysis)) in their apps. DAITA protects against the threat of advanced traffic analysis which can be used to connect patterns in VPN traffic with specific websites.
 
 ## Criteria