Add support for docutils 0.22 (#1671)

* Add support for docutils 0.22

No errors when building the docs or visual differences.

Related #1665

* Update docs

docs/development.rst

@@ -61,7 +61,7 @@ The theme officially supports the following dependencies in your Sphinx project:
     * - Sphinx
       - 6 or greater
     * - docutils
-      - > 0.18, < 0.22
+      - > 0.18, < 0.23
 
 .. deprecated:: 3.0
     Sphinx < 6 support removed

setup.cfg

@@ -45,7 +45,7 @@ packages = sphinx_rtd_theme
 python_requires = >=3.8
 install_requires = 
 	sphinx >=6,<10
-	docutils >0.18,<0.22
+	docutils >0.18,<0.23
 	sphinxcontrib-jquery >=4,<5
 tests_require = 
 	pytest