Mainly s/form/notation/ for RUN/CMD/...

This is a follow-on from @jamtur01's comment in #8360
However, while I was in there I also did some other minor things:
- s/.  /. /   Just single space after periods
- s/  *$//    Removed trailing spaces
- for builder.md, tried to wrap things at 80 columns

Signed-off-by: Doug Davis <dug@us.ibm.com>
I wonder if these two warnings shouldn't be pushed together?