docs: README.md having kaboom references

[amyspark-ng]

In usage where it says create-kaboom instead of create-kaplay in the title

Then in games, where it says a collection of games made in kaplay, but im conflicted with this, should we "start new" and only leave games that are tagged KAPLAY or leave a link to both, also should we remove the link to games hosted in replit, or not?

UPDATE:
we could do something like:
Newgrounds
Itch.io

and the url links to all games that have either tag [kaboomjs, kaplayjs, kaboom-js, kaplay-js]