Fixed some typos in some files, and I've also made some other changes as well.

I've fixed a bunch of typos in the README, mcmod.info and pack.mcmeta, and I've also made some other changes to the files for easier understanding. 
1. my name is thatsIch with caps I
2. there is also @FireBall1725 and @Cisien, we are the **authors**
3. credits are not a list, thus what you did there is no valid JSON format, credits are just a string