[RobertaPreLayernom] Fixes the CI daily test
# What does this PR do?
The checkpoint was not correct, it is a simply typo as the `flax` and `tf` tests were not affected by this.
_The documentation is not available anymore as the PR was closed or merged._<|||||>BTW, this model does not have tf or flax port yet, no?<|||||>It does 😉 