This updates the VP8 payload diagrams to be compliant with RFC 7741. It
also fixes some minor inconsistencies with PID, previously referred to
as PartID.
Bug: None
Change-Id: I33eb57d96f3d95b01ef5f0afa21a9dc54b41db2d
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/230243
Reviewed-by: Danil Chapovalov <danilchap@webrtc.org>
Commit-Queue: Emil Lundmark <lndmrk@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#34859}
575498ffc2