tgbl-review is not bipartite

[luyi256]

Hi! Thank you for providing this great benchmark! I found that the dataset tgbl-review is not bipartite. Specifically, there are 352,636 unique nodes in sources with index range from 0 to 352,637), and 298,590 unique nodes in destinationswith the same index range. I also used the is_bipartite function in networks to test, and it returned False.
There may be issues with the source dataset. Thanks for your attention. I really appreciate it!