ci(pytest): Detect doctest modules

Author: tony

setup.cfg

@@ -8,7 +8,7 @@ extend-ignore = E203,W503
 [tool:pytest]
 filterwarnings = 
 	ignore:distutils Version classes are deprecated. Use packaging.version instead.
-addopts = --reruns=0 --tb=short --no-header --showlocals 
+addopts = --reruns=0 --tb=short --no-header --showlocals --doctest-modules
 
 [isort]
 profile = black