checkpoint should be updated with enhanced version

[long8v]

I found perfomance overall enhanced when https://arxiv.org/pdf/2201.11460v1.pdf -> https://arxiv.org/pdf/2201.11460.pdf but checkpoint download link provided is not updated in first commit. checkpoint link seems to be updated to enhcanced version!

[yrcong]

Hi,

I remember that the checkpoint is the same but we add a post-processing. Please check (https://github.com/yrcong/RelTR/issues/34)