bpo-25910: Fixes redirection from http to https (#4674)

diff --git a/Doc/tutorial/interactive.rst b/Doc/tutorial/interactive.rst
index d73cfeb..c0eb1fe 100644
--- a/Doc/tutorial/interactive.rst
+++ b/Doc/tutorial/interactive.rst
@@ -51,4 +51,4 @@
 
 .. _GNU Readline: https://tiswww.case.edu/php/chet/readline/rltop.html
 .. _IPython: https://ipython.org/
-.. _bpython: http://www.bpython-interpreter.org/
+.. _bpython: https://www.bpython-interpreter.org/