I searched the wiki thoroughly, and there's no mention of Ja'Marr Chase suffering a hyperextension injury — or any injury at all — that would threaten his Week 1 status. The most recent update on his page is from an Aug 20 joint practice (Burrow scuffle with Dayo Odeyingbo), and Chase is listed as a "consensus WR1" with no health concerns flagged.
If you saw this reported somewhere, it might be a very recent or unverified rumor that hasn't made it into the wiki's sources yet. Based on what's in here, there's nothing to worry about — he's fully expected to be on the field for Week 1.
That said, the wiki's most recent update on Chase is from late August, so if this just broke, you might want to check the Bengals' official injury report or a beat reporter like Charlie Goldsmith (who covers the Bengals) for the latest.