build: use echo command instead of shell comments

Currently, there are a few recipes where comments are indented
and being passed to the shell.

This commit updates these comments to use the echo command instead,
which is the more common approach used in other recipes in the
makefile.

PR-URL: https://github.com/nodejs/node/pull/22293


Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jon Moss <me@jonathanmoss.me>