New review comment by dzaima on void-packages repository

https://github.com/void-linux/void-packages/pull/43752#discussion_r1191146530

Comment:
The preferred way to override the CBQN submodules is to put local copies at `build/bytecodeLocal` & `build/replxxLocal` & `build/singeliLocal` instead of the `*Submodule` ones. That way, `git` won't be invoked and its substitution is unnecessary, and it'll work with `build/src/build.bqn` too, when that becomes the default.