Update conf.in.py (#189)

* Update conf.in.py

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* Revert removal of the display_version option

The build passes regardless of this option, and it will probably be reinstated by sphinx-rtd-theme for self-hosted projects.

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Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

conf.in.py

@@ -28,7 +28,7 @@
 ]  # , 'rinoh.frontend.sphinx'], 'sphinx_autodoc_typehints'
 
 # The suffix of source filenames.
-source_suffix = ".rst"
+source_suffix = {".rst": "restructuredtext"}
 
 # The master toctree document.
 master_doc = "index"