Fix broken links, use https over http, replace redirects

docs/source/devguide/styleguide.rst

@@ -215,7 +215,7 @@ Documentation
 -------------
 
 Classes, structs, and functions are to be annotated for the `Doxygen
-<http://www.doxygen.nl/>`_ documentation generation tool. Use the ``\`` form of
+<https://www.doxygen.nl/>`_ documentation generation tool. Use the ``\`` form of
 Doxygen commands, e.g., ``\brief`` instead of ``@brief``.
 
 ------

docs/source/devguide/tests.rst

@@ -14,7 +14,7 @@ functions/classes in the OpenMC Python API.
 Prerequisites
 -------------
 
-- The test suite relies on the third-party `pytest <https://pytest.org>`_
+- The test suite relies on the third-party `pytest <https://docs.pytest.org>`_
   package. To run either or both the regression and unit test suites, it is
   assumed that you have OpenMC fully installed, i.e., the :ref:`scripts_openmc`
   executable is available on your :envvar:`PATH` and the :mod:`openmc` Python
@@ -46,7 +46,7 @@ To execute the test suite, go to the ``tests/`` directory and run::
     pytest
 
 If you want to collect information about source line coverage in the Python API,
-you must have the `pytest-cov <https://pypi.python.org/pypi/pytest-cov>`_ plugin
+you must have the `pytest-cov <https://pypi.org/project/pytest-cov>`_ plugin
 installed and run::
 
     pytest --cov=../openmc --cov-report=html

docs/source/devguide/user-input.rst

@@ -65,7 +65,7 @@ developer or send a message to the `developers mailing list`_.
 .. _property attribute: https://docs.python.org/3.6/library/functions.html#property
 .. _XML Schema Part 2: http://www.w3.org/TR/xmlschema-2/
 .. _boolean: http://www.w3.org/TR/xmlschema-2/#boolean
-.. _RELAX NG: http://relaxng.org/
-.. _compact syntax: http://relaxng.org/compact-tutorial-20030326.html
-.. _trang: http://www.thaiopensource.com/relaxng/trang.html
+.. _RELAX NG: https://relaxng.org/
+.. _compact syntax: https://relaxng.org/compact-tutorial-20030326.html
+.. _trang: https://relaxng.org/jclark/trang.html
 .. _developers mailing list: https://groups.google.com/forum/?fromgroups=#!forum/openmc-dev

docs/source/devguide/workflow.rst

@@ -122,11 +122,11 @@ can interfere with virtual environments.
 
 .. _git: http://git-scm.com/
 .. _GitHub: https://github.com/
-.. _git flow: http://nvie.com/git-model
-.. _valgrind: http://valgrind.org/
+.. _git flow: https://nvie.com/git-model
+.. _valgrind: https://www.valgrind.org/
 .. _style guide: https://docs.openmc.org/en/latest/devguide/styleguide.html
-.. _pull request: https://help.github.com/articles/using-pull-requests
+.. _pull request: https://docs.github.com/en/github/collaborating-with-issues-and-pull-requests/about-pull-requests
 .. _openmc-dev/openmc: https://github.com/openmc-dev/openmc
-.. _paid plan: https://github.com/plans
+.. _paid plan: https://github.com/pricing
 .. _Bitbucket: https://bitbucket.org
 .. _pip: https://pip.pypa.io/en/stable/