Prefer https & readthedocs.io instead of readthedocs.org for links

Read the Docs moved hosting to readthedocs.io instead of
readthedocs.org. Fix all links in the project.

For additional details, see:

https://blog.readthedocs.com/securing-subdomains/

> Starting today, Read the Docs will start hosting projects from subdomains on
> the domain readthedocs.io, instead of on readthedocs.org. This change
> addresses some security concerns around site cookies while hosting user
> generated data on the same domain as our dashboard.

EXAMPLES

@@ -93,7 +93,7 @@ Documentation using the classic theme
 * simuPOP: http://simupop.sourceforge.net/manual_release/build/userGuide.html (customized)
 * Sprox: http://sprox.org/ (customized)
 * SymPy: http://docs.sympy.org/
-* TurboGears: https://turbogears.readthedocs.org/ (customized)
+* TurboGears: https://turbogears.readthedocs.io/ (customized)
 * tvtk: http://docs.enthought.com/mayavi/tvtk/
 * Varnish: https://www.varnish-cache.org/docs/ (customized, alabaster for index)
 * Waf: https://waf.io/apidocs/
@@ -259,7 +259,7 @@ Documentation using sphinx_bootstrap_theme
 * Bootstrap Theme: https://ryan-roemer.github.io/sphinx-bootstrap-theme/
 * C/C++ Software Development with Eclipse: http://eclipsebook.in/
 * Dataverse: http://guides.dataverse.org/
-* e-cidadania: http://e-cidadania.readthedocs.org/
+* e-cidadania: https://e-cidadania.readthedocs.io/
 * Hangfire: http://docs.hangfire.io/
 * Hedge: https://documen.tician.de/hedge/
 * ObsPy: https://docs.obspy.org/

doc/_templates/index.html

@@ -74,9 +74,9 @@
 
   <p>{%trans%}
     You can also download PDF/EPUB versions of the Sphinx documentation:
-    a <a href="http://readthedocs.org/projects/sphinx/downloads/pdf/stable/">PDF version</a> generated from
+    a <a href="https://media.readthedocs.org/pdf/sphinx/stable/sphinx.pdf">PDF version</a> generated from
     the LaTeX Sphinx produces, and
-    a <a href="http://readthedocs.org/projects/sphinx/downloads/epub/stable/">EPUB version</a>.
+    a <a href="https://media.readthedocs.org/epub/sphinx/stable/sphinx.epub">EPUB version</a>.
    {%endtrans%}
   </p>
 
@@ -106,7 +106,7 @@
   <h2>{%trans%}Hosting{%endtrans%}</h2>
 
   <p>{%trans%}Need a place to host your Sphinx docs?
-    <a href="http://readthedocs.org">readthedocs.org</a> hosts a lot of Sphinx docs
+    <a href="https://readthedocs.org/">readthedocs.org</a> hosts a lot of Sphinx docs
     already, and integrates well with projects' source control.  It also features a
     powerful built-in search that exceeds the possibilities of Sphinx' JavaScript-based
     offline search.{%endtrans%}</p>

doc/develop.rst

@@ -138,7 +138,7 @@ own extensions.
 .. _cmakedomain: https://bitbucket.org/klorenz/sphinxcontrib-cmakedomain
 .. _GNU Make: http://www.gnu.org/software/make/
 .. _makedomain: https://bitbucket.org/klorenz/sphinxcontrib-makedomain
-.. _inlinesyntaxhighlight: http://sphinxcontrib-inlinesyntaxhighlight.readthedocs.org
+.. _inlinesyntaxhighlight: https://sphinxcontrib-inlinesyntaxhighlight.readthedocs.io/
 .. _CMake: https://cmake.org
 .. _domaintools: https://bitbucket.org/klorenz/sphinxcontrib-domaintools
 .. _restbuilder: https://pypi.python.org/pypi/sphinxcontrib-restbuilder

doc/ext/thirdparty.rst

@@ -6,7 +6,7 @@ repository.  It is open for anyone who wants to maintain an extension
 publicly; just send a short message asking for write permissions.
 
 There are also several extensions hosted elsewhere.  The `Sphinx extension
-survey <http://sphinxext-survey.readthedocs.org/en/latest/>`__ contains a
+survey <https://sphinxext-survey.readthedocs.io/>`__ contains a
 comprehensive list.
 
 If you write an extension that you think others will find useful or you think

doc/faq.rst

@@ -58,7 +58,7 @@ Read the Docs
     Sphinx. They will host sphinx documentation, along with supporting a number
     of other features including version support, PDF generation, and more. The
     `Getting Started
-    <http://read-the-docs.readthedocs.org/en/latest/getting_started.html>`_
+    <https://read-the-docs.readthedocs.io/en/latest/getting_started.html>`_
     guide is a good place to start.
 
 Epydoc

doc/intro.rst

@@ -17,7 +17,7 @@ docs have a look at `Epydoc <http://epydoc.sourceforge.net/>`_, which also
 understands reST.
 
 For a great "introduction" to writing docs in general -- the whys and hows, see
-also `Write the docs <http://write-the-docs.readthedocs.org/>`_, written by Eric
+also `Write the docs <https://write-the-docs.readthedocs.io/>`_, written by Eric
 Holscher.
 
 .. _rinohtype: https://github.com/brechtm/rinohtype