New review comment by ifreund on void-packages repository

https://github.com/void-linux/void-packages/pull/29288#discussion_r653801105

Comment:
From the new commit message:

We call this "zig-build" instead of just "zig" as this build-style
relies on usage of the zig build system. In the future, other build
systems such as meson may support zig code as well. Furthermore, the
zig build system may be used to build C/C++ code as well, not just zig.