docs: replace outdated HTTP links with current HTTPS URLs

docs/configuration.rst

@@ -72,4 +72,4 @@ Note that this feature is automatically disabled with the ``--tb=native`` option
 mechanism used to suppress traceback entries from ``mock`` module does not work with that option
 anyway plus it generates confusing messages on Python 3.5 due to exception chaining
 
-.. _advanced assertions: http://docs.pytest.org/en/stable/assert.html
+.. _advanced assertions: https://docs.pytest.org/en/stable/assert.html

docs/index.rst

@@ -2,7 +2,7 @@ pytest-mock
 ===========
 
 This `pytest`_ plugin provides a ``mocker`` fixture which is a thin-wrapper around the patching API
-provided by the `mock package <http://pypi.python.org/pypi/mock>`_:
+provided by the `mock package <https://pypi.org/project/mock>`_:
 
 .. code-block:: python
 
@@ -28,7 +28,7 @@ comparing calls.
 Install
 =======
 
-Install using `pip <http://pip-installer.org/>`_:
+Install using `pip <https://pip.pypa.io/>`_:
 
 .. code-block:: console