web/changelog/11.2: add info about vk download speed

Author: wukko

web/changelogs/11.2.md

@@ -51,6 +51,7 @@ by the way, we also made it possible to [choose any preferred media container](/
 - pinterest now returns an appropriate error when a pin is unavailable.
 - AI dubs on youtube are no longer accidentally selected as default tracks.
 - youtube HLS preference is now deprecated, but can be enabled on a self-hosted instance via `ENABLE_DEPRECATED_YOUTUBE_HLS` in env.
+- downloads from vk are now way faster.
 
 ## web app improvements
 - improved compatibility of local processing & related code with older browsers.