checkdoc-create-error is a compiled Lisp function in `
(checkdoc-create-error TEXT START END &optional UNFIXABLE)
Used to create the return error text returned from all engines.
TEXT is the descriptive text of the error. START and END define the region
it is sensible to highlight when describing the problem.
Optional argument UNFIXABLE means that the error has no auto-fix available.
A list of the form (TEXT START END UNFIXABLE) is returned if we are not
generating a buffered list of errors.