Update some www.unicode.org URLs to use HTTPS. (GH-18912)
diff --git a/Doc/howto/unicode.rst b/Doc/howto/unicode.rst
index 51bd64b..4825b39 100644
--- a/Doc/howto/unicode.rst
+++ b/Doc/howto/unicode.rst
@@ -156,9 +156,9 @@
References
----------
-The `Unicode Consortium site <http://www.unicode.org>`_ has character charts, a
+The `Unicode Consortium site <https://www.unicode.org>`_ has character charts, a
glossary, and PDF versions of the Unicode specification. Be prepared for some
-difficult reading. `A chronology <http://www.unicode.org/history/>`_ of the
+difficult reading. `A chronology <https://www.unicode.org/history/>`_ of the
origin and development of Unicode is also available on the site.
On the Computerphile Youtube channel, Tom Scott briefly
@@ -393,7 +393,7 @@
from the above output, ``'Ll'`` means 'Letter, lowercase', ``'No'`` means
"Number, other", ``'Mn'`` is "Mark, nonspacing", and ``'So'`` is "Symbol,
other". See
-`the General Category Values section of the Unicode Character Database documentation <http://www.unicode.org/reports/tr44/#General_Category_Values>`_ for a
+`the General Category Values section of the Unicode Character Database documentation <https://www.unicode.org/reports/tr44/#General_Category_Values>`_ for a
list of category codes.