MAINT: Add missing hooks tests.

Author: rossbar

pyproject.toml

@@ -169,6 +169,7 @@ attr = 'numpydoc.__version__'
 [tool.setuptools.package-data]
 numpydoc = [
  'tests/test_*.py',
+ 'tests/hooks/test_*.py',
  'tests/tinybuild/Makefile',
  'tests/tinybuild/index.rst',
  'tests/tinybuild/*.py',