0.14.0: documentation uses `recommonmark` which is now deprecated

[kloczek]

From https://github.com/readthedocs/recommonmark

Warning: recommonmark is now deprecated. We recommend using MyST for a docutils bridge going forward. See https://github.com/readthedocs/recommonmark/issues/221 for background and discussion.

+ /usr/bin/sphinx-build -n -T -b man docs build/sphinx/man
Running Sphinx v7.1.2

Traceback (most recent call last):
  File "/usr/lib/python3.8/site-packages/sphinx/registry.py", line 441, in load_extension
    mod = import_module(extname)
  File "/usr/lib64/python3.8/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 973, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'recommonmark'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/lib/python3.8/site-packages/sphinx/cmd/build.py", line 285, in build_main
    app = Sphinx(args.sourcedir, args.confdir, args.outputdir,
  File "/usr/lib/python3.8/site-packages/sphinx/application.py", line 229, in __init__
    self.setup_extension(extension)
  File "/usr/lib/python3.8/site-packages/sphinx/application.py", line 402, in setup_extension
    self.registry.load_extension(self, extname)
  File "/usr/lib/python3.8/site-packages/sphinx/registry.py", line 444, in load_extension
    raise ExtensionError(__('Could not import extension %s') % extname,
sphinx.errors.ExtensionError: Could not import extension recommonmark (exception: No module named 'recommonmark')

Extension error:
Could not import extension recommonmark (exception: No module named 'recommonmark')

[prusnak]

Could you try fixing the issue and send a pull request with a fix?

[kloczek]

Sorry have no time . .have really long list of other issues to sort out :(

[prusnak]

Got rid of markdown completely in ad03cfdb0516b07d6e37890fc7b75178ad20decf