[fbsync] Fix URL to Flickr30kEntities webpage (#5372)

Summary: Co-authored-by: Nicolas Hug <contact@nicolas-hug.com>

Reviewed By: NicolasHug

Differential Revision: D34140250

fbshipit-source-id: 371a9081bfc0cd12c8492266497a7ab416697cba

Author: jdsgomes

torchvision/datasets/flickr.py

@@ -109,7 +109,7 @@ def __len__(self) -> int:
 
 
 class Flickr30k(VisionDataset):
-    """`Flickr30k Entities <http://web.engr.illinois.edu/~bplumme2/Flickr30kEntities/>`_ Dataset.
+    """`Flickr30k Entities <https://bryanplummer.com/Flickr30kEntities/>`_ Dataset.
 
     Args:
         root (string): Root directory where images are downloaded to.