Exactly what I wanted, worked like a charm
I didn't have to modify anything, just added the contents of the file (without the "instructions" section) at the end of the "End G-Code" in the printer settings... Now the generated .gcode file has all the details at the end.
Although the save as html is also useful and produces a neat sheet, but then you would have 2 files.
Embed it in the same gcode file will definitely reduce number of files, the hustle to look for and match the files, and mostly you don't have to remember to do that extra step.
Cheers