Fix url's

DESCRIPTION

@@ -9,7 +9,7 @@ Authors@R: c(person('Jan', 'Wijffels', role = c('aut', 'cre', 'cph'), email = 'j
     person('The Abseil Authors', role = c('ctb', 'cph'), comment = "Files at src/parallel_hashmap (Apache License, Version 2.0"),
     person('Ivan Belonogov', role = c('ctb', 'cph'), email = '[email protected]', comment = "Files at src/youtokentome (MIT License)"))
 Maintainer: Jan Wijffels <[email protected]>
-Description: Unsupervised text tokenizer focused on computational efficiency. Wraps the 'YouTokenToMe' library <https://github.com/VKCOM/YouTokenToMe> which is an implementation of fast Byte Pair Encoding (BPE) <https://www.aclweb.org/anthology/P16-1162>.
+Description: Unsupervised text tokenizer focused on computational efficiency. Wraps the 'YouTokenToMe' library <https://github.com/VKCOM/YouTokenToMe> which is an implementation of fast Byte Pair Encoding (BPE) <https://aclanthology.org/P16-1162/>.
 URL: https://github.com/bnosac/tokenizers.bpe
 License: MPL-2.0
 Encoding: UTF-8