bug#66183: elixir-ts-mode test failure

[Eli Zaretskii <eliz@gnu.org>]

> Cc: 66183@debbugs.gnu.org, jm@pub.pink
> From: Yuan Fu <casouri@gmail.com>
> Date: Tue, 26 Sep 2023 11:00:23 -0700
> 
> > On Sep 26, 2023, at 9:30 AM, Wilhelm Kirschbaum <wkirschbaum@gmail.com> wrote:
> > 
> > 
> > Yuan Fu <casouri@gmail.com> writes:
> > 
> >>> On Sep 24, 2023, at 9:53 AM, john muhl via Bug reports for GNU
> >>> Emacs, the Swiss army knife of text editors <bug-gnu-emacs@gnu.org>
> >>> wrote:
> >>> The change in 5cba5ee8905 caused an elixir test to start failing. The
> >>> white space at the start of the test is now in a heex range so pressing
> >>> tab there matches a heex rule instead of the elixir one. Moving the
> >>> dummy range to the end fixes the test.
> >> 
> >> Thank you. I’ll make sure to remember also running elixir tests when I make a change.
> >> 
> >> I looked around and found elixir-mode’s language-at-point function
> >> works in a way that isn’t what tree-sitter functions
> >> expect. Tree-sitter functions expect the major mode to derive language
> >> at point by querying the host language and do some pattern matching,
> >> rather than using language parser’s range. I took a quick look at
> >> elixir’s grammar and came up with this version for a POC. You probably
> > 
> > Sorry about that.  I had absolutely no idea how it was expected to work.
> 
> It’s absolutely my fault :-) Several people have had confusion about it, because the docstring wasn’t clear enough. I’ve updated the docstring so hopefully this confusion won’t occur in the future.

Should this doc-string fix be cherry-picked to the release branch?