Various minor documentation fixes

debug_toolbar/panels/__init__.py

@@ -87,7 +87,7 @@ def template(self):
         Template used to render :attr:`content`.
 
         Mandatory, unless the panel sets :attr:`has_content` to ``False`` or
-        overrides `attr`:content`.
+        overrides :attr:`content`.
         """
         raise NotImplementedError
 
@@ -248,6 +248,6 @@ def run_checks(cls):
         This will be called as a part of the Django checks system when the
         application is being setup.
 
-        Return a list of :class: `django.core.checks.CheckMessage` instances.
+        Return a list of :class:`django.core.checks.CheckMessage` instances.
         """
         return []

docs/contributing.rst

@@ -103,7 +103,7 @@ Style
 The Django Debug Toolbar uses `black <https://github.com/psf/black>`__ to
 format code and additionally uses flake8 and isort. The toolbar uses
 `pre-commit <https://pre-commit.com>`__ to automatically apply our style
-guidelines when a commit is made. Set up pre-commit before committing with:
+guidelines when a commit is made. Set up pre-commit before committing with::
 
     $ pre-commit install
 
@@ -152,8 +152,8 @@ The release itself requires the following steps:
 
 #. Update supported Python and Django versions:
 
-   - ``setup.py`` ``python_requires`` list
-   - ``setup.py`` trove classifiers
+   - ``setup.cfg`` ``python_requires`` and ``install_requires`` options
+   - ``setup.cfg`` trove classifiers
    - ``README.rst``
 
    Commit.
@@ -167,7 +167,7 @@ The release itself requires the following steps:
    Commit.
 
 #. Bump version numbers in ``docs/changes.rst``, ``docs/conf.py``,
-   ``README.rst``, ``debug_toolbar/__init__.py`` and ``setup.py``.
+   ``README.rst``, ``debug_toolbar/__init__.py`` and ``setup.cfg``.
    Add the release date to ``docs/changes.rst``. Commit.
 
 #. Tag the new version.