Add spell checking to CI flow

[JoelMarcey]

Is this a bug report?

No. Enhancement.

Ref: #327

Have you read the Contributing Guidelines?

Yes.

Environment

N/A

Steps to Reproduce

N/A

Expected Behavior

N/A

Actual Behavior

N/A

Reproducible Demo

N/A

[neilsutcliffe]

Can we add accidental variable names into this as well? Stuff like the following?

• docusuarus
• langauge / langauges

And similar variations there-of.

[endiliey]

I think we should leave linting stuff to user.