Update weblinks for the Open Multilingual Wordnet (nltk#3097)

* update weblinks for the Open Multilingual Wordnet

Co-authored-by: Tom Aarsen <[email protected]>

Author: fcbond

nltk/corpus/reader/wordnet.py

@@ -26,7 +26,7 @@
 
 This module also allows you to find lemmas in languages
 other than English from the Open Multilingual Wordnet
-http://compling.hss.ntu.edu.sg/omw/
+https://omwn.org/
 
 """
 
@@ -2179,7 +2179,7 @@ def custom_lemmas(self, tab_file, lang):
         language to Princeton WordNet 3.0 synset offsets, allowing NLTK's
         WordNet functions to then be used with that language.
 
-        See the "Tab files" section at http://compling.hss.ntu.edu.sg/omw/ for
+        See the "Tab files" section at https://omwn.org/omw1.html for
         documentation on the Multilingual WordNet tab file format.
 
         :param tab_file: Tab file as a file or file-like object