Fix broken link in Doc/whatsnew/3.7.rst (GH-4335)

Doc/whatsnew/3.7.rst

@@ -724,11 +724,11 @@ PEP 545: Python Documentation Translations
 :pep:`545` describes the process to translate Python documentation,
 and two translations have been added:
 
-- Japanese: https://docs.python.org/ja/ and associated github
+- Japanese: https://docs.python.org/ja/ and associated GitHub
   repository: https://github.com/python/python-docs-ja
 
-- French: https://docs.python.org/fr/ and associated github
+- French: https://docs.python.org/fr/ and associated GitHub
   repository: https://github.com/python/python-docs-fr
 
 (Contributed by Julien Palard, Inada Naoki, and Victor Stinner in
-:issue:`issue26546`.)
+:issue:`26546`.)