error in comment fixed

ess/TraceWin.py

@@ -711,7 +711,7 @@ class density_file:
                 if unit:
                     data_set.attrs['unit']=unit
         if partran:
-            # 3 numbers per location..
+            # 1 numbers per location and per run..
             data=['lost', 'powlost']
             units=['', 'W']
             for val,unit in zip(data, units):