add unstable --no-minify flag to rustdoc about rust HOT 5 OPEN

apparently this existed before in the form of --disable-minification, but was removed without discussion in #101702, however, the corrosponding config.toml option build.docs-minification was not removed, instead being silently ignored.

from rust.

silently ignoring removed options is not a good solution, especially when not all of the documentation has been updated to reflect the removal.

from rust.

the rationale for removal is that is that it would allow the contents of the file to change without the filename hash changing, but this is easily addressed by just adding nominify after the hash if minification is disabled.

from rust.

I don't mind putting back the option but you'll need to have a good use-case for it (implementing the option so it doesn't go against why it was removed originally shouldn't be too complicated).

from rust.

usecase is i don't want to do hacky and fallible symlink stuff just to get accurate line number reporting.

alternative is making a robust symlink override as part of bootstrap, but that seem like a lot more work than just reinstituting the option

from rust.