clarify that dos_values refer to the simulation cell.

meta_info/nomad_meta_info/public.nomadmetainfo.json

@@ -712,7 +712,7 @@
       ],
       "units": "J"
     }, {
-      "description": "Values (number of states for a given energy, the set of discrete energy values is given in dos_energies) of density (electronic-energy or vibrational-energy) of states.",
+      "description": "Values (number of states for a given energy, the set of discrete energy values is given in dos_energies) of density (electronic-energy or vibrational-energy) of states. This refers to the simulation cell, i.e. integrating over all energies will give the number of electrons in the simulation cell.",
       "dtypeStr": "f",
       "name": "dos_values",
       "shape": [