Add test and documentation for any-glob-to-all-files

[dfandrich]

This test verifies that the glob brace syntax will match any glob against all files. Document that any-glob-to-all-files means any single glob. This reduces the ambiguity that caused #731 and other issues to be opened. Also, fix an any-glob-to-any-file example so it actually matches within the entire repository.

[IvanZosimov]

Hi, @dfandrich 👋 Thanks for the PR, we will take a look!