Prefer https://*.readthedocs.io over http://*.rtfd.org

- Requests URL using https instead of http
- Avoids unnecessary redirect of *.rtfd.org -> *.readthedocs.io

*.rtfd.org exists as a means for pasting short URLs, which doesn't much
 apply for links in documentation.

changelog/3092.doc

@@ -0,0 +1 @@
+Prefer https://*.readthedocs.io over http://*.rtfd.org for links in the documentation.

doc/en/projects.rst

@@ -37,7 +37,7 @@ Here are some examples of projects using ``pytest`` (please send notes via :ref:
 * `mwlib <http://pypi.python.org/pypi/mwlib>`_ mediawiki parser and utility library
 * `The Translate Toolkit <http://translate.sourceforge.net/wiki/toolkit/index>`_ for localization and conversion
 * `execnet <http://codespeak.net/execnet>`_ rapid multi-Python deployment
-* `pylib <http://py.rtfd.org>`_ cross-platform path, IO, dynamic code library
+* `pylib <https://py.readthedocs.io>`_ cross-platform path, IO, dynamic code library
 * `Pacha <http://pacha.cafepais.com/>`_ configuration management in five minutes
 * `bbfreeze <http://pypi.python.org/pypi/bbfreeze>`_ create standalone executables from Python scripts
 * `pdb++ <http://bitbucket.org/antocuni/pdb>`_ a fancier version of PDB

doc/en/tmpdir.rst

@@ -106,6 +106,4 @@ When distributing tests on the local machine, ``pytest`` takes care to
 configure a basetemp directory for the sub processes such that all temporary
 data lands below a single per-test run basetemp directory.
 
-.. _`py.path.local`: http://py.rtfd.org/en/latest/path.html
-
-
+.. _`py.path.local`: https://py.readthedocs.io/en/latest/path.html