[Chapel Merge] Updated documentation for Error.message() to refle

Branch: refs/heads/master
Revision: 6ed42ad
Author: bradcray
Log Message:

Merge pull request #17497 from shubhamkmr04/UpdatedDocumentationInErrorClass

Updated documentation for Error.message() to reflect string return type

[contributed by @shubhamkmr04, reviewed by me]

This updates the documentation for Error.message() to clarify that it returns a string (which was true, but only implied before).

Resolve #17469

Modified Files:
M modules/internal/ChapelError.chpl

Compare: https://github.com/chapel-lang/chapel/compare/8e036a472beb...6ed42adbc3f9