Fix documentation generation by updating sphinx dependencies

docs/requirements.txt

@@ -1,5 +1,5 @@
-Sphinx==2.0.1
-sphinx-rtd-theme==0.4.3
-sphinx-autodoc-typehints==1.6.0
-sphinxcontrib-asyncio==0.2.0
-m2r==0.2.1
+Sphinx==4.2.0
+sphinx-rtd-theme==1.0.0
+sphinx-autodoc-typehints==1.12.0
+sphinxcontrib-asyncio==0.3.0
+m2r2==0.3.1

docs/source/conf.py

@@ -34,7 +34,7 @@ extensions = [
     'sphinx.ext.autodoc',
     'sphinxcontrib.asyncio',
     'sphinx_autodoc_typehints',
-    'm2r'  # mdinclude directive for makrdown files
+    'm2r2'  # mdinclude directive for makrdown files
 ]
 autodoc_member_order = 'bysource'
 autodoc_inherit_docstrings = False

src/galaxy/api/plugin.py

@@ -1063,7 +1063,7 @@ class Plugin:
         This method will only be used if :meth:`get_subscriptions` has been implemented.
 
         :param context: the value returned from :meth:`prepare_subscription_games_context`
-        :return a generator object that yields SubscriptionGames
+        :return: a generator object that yields SubscriptionGames
 
         .. code-block:: python
             :linenos: