Possibly true
I am not familiar with the actual incident but something which adds to the likliehood of it being true:
Given that most wheel well "fires" were probably heat from overheated brakes without flames and "fire" indications were removed as soon as gear was extended, the wheel well fire drill on some Boeings, used to call for the gear to be retracted, after a suitable cooling period of time following extension.
At some point in the fairly distant past, that drill changed to leaving the gear extended and land asap. Gear may still be retracted after the cooling period, if performance requires it.
It is not uncommon for specific incidents to be the cause for such changes in drills.