A few amendments to getJigsawJDK.sh - spelling and grammar fixes.
A few amendments to getJigsawJDK.sh - spelling and grammar fixes.

ncoif/jdk9-jigsaw,AdoptOpenJDK/jdk9-jigsaw,wjam/jdk9-jigsaw,AdoptOpenJDK/jdk9-jigsaw,neomatrix369/jdk9-jigsaw,neomatrix369/jdk9-jigsaw,rjdkolb/jdk9-jigsaw,ncoif/jdk9-jigsaw,AdoptOpenJDK/jdk9-jigsaw,wjam/jdk9-jigsaw,neomatrix369/jdk9-jigsaw,rjdkolb/jdk9-jigsaw