LuaDocs/Desc attributes spelling fixes

I have gone through the Desc attributes used during the LuaDocs generation and made some spelling, punctuation, and consistency fixes. If desired I would not mind going through the other Desc attributes as well.
I thought about this myself when I changed it, and ultimately decided on define because the key-value pairs define [the] initial parameters. However now I'm thinking that 'a list of key-value pairs' should be seen as one object so "defines the" would be correct.