[Chapel Merge] Revise the new Mason doc with feedback

Branch: refs/heads/main
Revision: b8146d0e95cbbd435e09ddca9ef34658221a7d5e
Author: e-kayrakli
Link: Revise the new Mason doc with feedback by e-kayrakli · Pull Request #28190 · chapel-lang/chapel · GitHub
Log Message:
Revise the new Mason doc with feedback (#28190)

I merged https://github.com/chapel-lang/chapel/pull/28178 too fast
without actually adding the commit with feedback addressed. Sorry. This
PR has the feedback handled.

Compare: Comparing e2297e650ee4fc7f20eba5a003caa8116c8080ec...410ffd0944cda7e3c1d3919f78fe840d44f82d5e · chapel-lang/chapel · GitHub

Diff:
M doc/rst/tools/mason/guide/prereqs.rst
https://github.com/chapel-lang/chapel/pull/28190.diff