docs: convert comment to docstring

Will show when running `pytest --fixtures`

Signed-off-by: Mike Fiedler <[email protected]>

tests/conftest.py

@@ -6,7 +6,9 @@
 
 @pytest.fixture(autouse=True)
 def reenable_socket():
- # The tests can leave the socket disabled in the global scope.
- # Fix that by automatically re-enabling it after each test
+ """
+ The tests can leave the socket disabled in the global scope.
+ Fix by automatically re-enabling it after each test.
+ """
  yield
  enable_socket()