fix docsting format

Author: link89

dpdata/plugins/ase.py

@@ -62,9 +62,7 @@ def from_labeled_system(self, atoms: ase.Atoms, **kwargs) -> dict:
         """Convert ase.Atoms to a LabeledSystem. Energies and forces
         are calculated by the calculator.
 
-        Note that this method will try to load virial from the following sources:
-        - atoms.info['virial']
-        - converted from stress tensor
+        Note that this method will try to load virials from either virial field or converted from stress tensor.
 
         Parameters
         ----------