Update README.md

README.md

@@ -39,13 +39,13 @@ chmod +x mlcorr_prep.sh
 # calculate MP2 MP3 MP4 energy density
 cd ../eneden/
 chmod +x eneden.sh
-./eneden.sh ch4 # Here STDOUT will give the values of summing up of the energy density
-                # on can compare with the reference value
+./eneden.sh ch4 # Here STDOUT will give the values of summing up of the energy density,
+                # which should equals to MPn correlation energy
 
 # calculate reference value:
 cd ../ref/
 psi4 -n 8 -i input.dat -o output.dat # you can find reference MP2, MP3, and MP4
-                                     # correlation energy density in output.dat
+                                     # correlation energy in output.dat
 
 ```