Fix comments in species.py

Author: sevyharris

rmgpy/species.py

@@ -456,9 +456,11 @@ def to_cantera(self, use_chemkin_identifier=False):
             label = self.label
 
         if self.contains_surface_site() and element_dict["X"] > 1:
-            # for multidentate adsorbates, 'size' is the same as 'sites'? for some reason, cantera won't take the input 'size,' so will need to use 'sites'
+            # for multidentate adsorbates, 'size' is the same as 'sites'?
+            # for some reason,cantera won't take the input 'sites' so will need to use 'size'
             ct_species = ct.Species(label, element_dict, size=element_dict["X"])
-            # hopefully this will be fixed soon, so that ct.Species can take a 'sites' parameter or that cantera can read input files with 'size' specified
+            # hopefully this will be fixed soon, so that ct.Species can take a 'sites' parameter
+            # or that cantera can read input files with 'size' specified
         else:
             ct_species = ct.Species(label, element_dict)