Update test_utils.py

Author: naik-aakash

tests/openff_md/test_utils.py

@@ -231,8 +231,8 @@ def test_calculate_elyte_composition():
     comp_dict = calculate_elyte_composition(
         vol_ratio, salts, solvent_densities, "volume"
     )
-    counts = counts_from_masses(comp_dict, 100)
-    assert sum(counts.values()) == 100
+    counts = counts_from_masses(comp_dict, 101)
+    assert sum(counts.values()) == 101
 
     mol_ratio = {
         "[Li+]": 0.00616,