I think they have scrapped that. Clicking the link to read the full article now says
Every week during Dragonflight Season 4, one of the three Dragonflight raids will become Awakened: Vault of the Incarnates; Aberrus, the Shadowed Crucible; or Amirdrassil, the Dream’s Hope. Enemies within Awakened raids are stronger and drop upgraded loot with a higher item level.
Instead of the whole “X raid for two weeks, then Y for two weeks then Z for two weeks then X,Y,Z are awakened until season is over”