This is HTTPS now (#3407)

diff --git a/docs/development/getting-started.rst b/docs/development/getting-started.rst
index dc55893..d94e656 100644
--- a/docs/development/getting-started.rst
+++ b/docs/development/getting-started.rst
@@ -118,7 +118,7 @@
 The HTML documentation index can now be found at
 ``docs/_build/html/index.html``.
 
-.. _`Homebrew`: http://brew.sh
+.. _`Homebrew`: https://brew.sh
 .. _`MacPorts`: https://www.macports.org
 .. _`OpenSSL`: https://www.openssl.org
 .. _`pytest`: https://pypi.python.org/pypi/pytest