revert coverage config change

Signed-off-by: YunLiu <[email protected]>

Author: KumoLiu

setup.cfg

@@ -278,7 +278,7 @@ disallow_incomplete_defs = True
 
 [coverage:run]
 concurrency = multiprocessing
-source = monai
+source = .
 data_file = .coverage/.coverage
 omit = setup.py