[2.7] bpo-33503: Fix the broken pypi link in the source and the documentation (GH-6814). (GH-6905)

(cherry picked from commit 19177fbd5d6d9b29ccc302d65f9d9417ece082ce)

Co-authored-by: Stéphane Wirtel <stephane@wirtel.be>
diff --git a/Doc/tutorial/whatnow.rst b/Doc/tutorial/whatnow.rst
index 89dfa6a..f6ce4f4 100644
--- a/Doc/tutorial/whatnow.rst
+++ b/Doc/tutorial/whatnow.rst
@@ -38,7 +38,7 @@
 
 * https://docs.python.org:  Fast access to Python's  documentation.
 
-* https://pypi.python.org/pypi: The Python Package Index, previously also nicknamed
+* https://pypi.org: The Python Package Index, previously also nicknamed
   the Cheese Shop, is an index of user-created Python modules that are available
   for download.  Once you begin releasing code, you can register it here so that
   others can find it.