Documentation surrounding how the language is detected seems incomplete in light of recent commit

[aezarebski]

The documentation of how the programming language is detected,

https://github.com/copilot-emacs/copilot.el?tab=readme-ov-file#programming-language-detection

is incomplete now there is a mechanism to pull this from the minor mode as well (which is great, thank you!),

4e203ef

Perhaps the following could be added:

In some situations, e.g. writing git commit messages, it is useful to be able to extract the languageId from the minor mode. This is configured by the copilot-minor-mode-alist.