[PBCKP-289] Fix sphinxcontrib.napoleon import error

Error was:
"Could not import extension sphinxcontrib.napoleon (exception: cannot import name 'Callable' from 'collections' (/usr/lib/python3.10/collections/init.py))"

Author: kulaginm

docs/README.md

@@ -1,9 +1,9 @@
 # Building the documentation
 
-Make sure you have `Sphinx` and `sphinxcontrib-napoleon` packages installed:
+Make sure you have `Sphinx` package installed:
 
 ```
-pip install Sphinx sphinxcontrib-napoleon
+pip install Sphinx
 ```
 
 Then just run
@@ -12,4 +12,4 @@ Then just run
 make html
 ```
 
-Documentation will be built in `build/html` directory. Other output formats are also available; run `make` without arguments to see the options.
+Documentation will be built in `build/html` directory. Other output formats are also available; run `make` without arguments to see the options.

docs/source/conf.py

@@ -19,7 +19,7 @@
 # -- Project information -----------------------------------------------------
 
 project = u'testgres'
-copyright = u'2016-2018, Postgres Professional'
+copyright = u'2016-2022, Postgres Professional'
 author = u'Postgres Professional'
 
 # The short X.Y version
@@ -36,7 +36,7 @@
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
-extensions = ['sphinx.ext.autodoc', 'sphinxcontrib.napoleon']
+extensions = ['sphinx.ext.autodoc', 'sphinx.ext.napoleon']
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']

run_tests.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-# Copyright (c) 2017, Postgres Professional
+# Copyright (c) 2017-2022 Postgres Professional
 
 set -eux
 
@@ -22,7 +22,7 @@ export VIRTUAL_ENV_DISABLE_PROMPT=1
 source $VENV_PATH/bin/activate
 
 # install utilities
-$PIP install coverage flake8 psutil Sphinx sphinxcontrib-napoleon
+$PIP install coverage flake8 psutil Sphinx
 
 # install testgres' dependencies
 export PYTHONPATH=$(pwd)