[docs] Wordsmithing to program layout descriptio in GettingStarted

This just incrementally improves what was already there; it's questionable whether this content belongs in the getting started guide at all.

Patch by Ben Nathanson w/permission w/minor edtis by me.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@260040 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed