Error Prompt Updates in getEMLfunctions.R

[James-R-Brown]

Hey there,

Can you tell that I've been running into errors a lot as I continue learning how to use EMLeditor properly?

I patched up some typos present in a couple of error prompts throughout this file.

The other change might be a bit more subjective: I standardized the references to other functions to always end with a () to better indicate their status as functions within EMLeditor.

The only inconsistency remaining is where crayon::green$bold is used for the font of referred functions in some error prompts, but that seemed like a more deliberate decision to modify the font for those particular scenarios, so I decided against extending that change to the rest of the prompts.

[RobLBaker]

looks good - keep them coming. I think the crayon vs no crayon was partly a historial artifact of my learning how to use that function and/or thinking I should move it all over to cli & glue.