Use the canonical host for two urls on the OpenSSL website (#3219)
diff --git a/docs/installation.rst b/docs/installation.rst
index 6aff5a7..7f69f51 100644
--- a/docs/installation.rst
+++ b/docs/installation.rst
@@ -274,5 +274,5 @@
.. _`bug in conda`: https://github.com/conda/conda-recipes/issues/110
.. _`Greg Wilson's blog post`: https://software-carpentry.org/blog/2014/04/mr-biczo-was-right.html
.. _virtualenv: https://virtualenv.pypa.io/en/latest/
-.. _openssl.org: https://openssl.org/source/
+.. _openssl.org: https://www.openssl.org/source/
.. _`wheel cache`: https://pip.pypa.io/en/stable/reference/pip_install/#caching