docs: mention h.266 (vvc) for mpv

README.md

@@ -35,7 +35,7 @@ I am developing this application in my spare time.
     - SSA/ASS has limited styling support see [this issue](https://github.com/google/ExoPlayer/issues/8435)
 - mpv
   - Container formats: mkv, mov, mp4, avi
-  - Video codecs: H.264, H.265, VP8, VP9, AV1
+  - Video codecs: H.264, H.265, H.266, VP8, VP9, AV1
   - Audio codecs: Opus, FLAC, MP3, AAC, AC-3, E-AC-3, TrueHD, DTS, DTS-HD
   - Subtitle codecs: SRT, VTT, SSA/ASS, DVDSUB
   - Optionally force software decoding when hardware decoding has issues.