Update Commas, Modules, and Functions sections

Update Commas, Modules, and Functions sections based on the TO DO's [here](https://github.com/SemanticSugar/javascript/wiki/TODO).
Aaah yeah, I noticed that as well. The indentation on the whole is set to 2 spaces and not 4. I wasn't sure if we should change the indentation on individual sections. I was also thinking I could create a separate PR to change the indentation of the file.