Merge pull request #1 from adlnet/master

update from adl master
Fixed broken link in tables

Links in tables have to use html, not markdown.
fixed incorrectly formatted notes
Downgraded h7 to h6 because h7 doesn't exist and didn't work
fixed another couple of notes
group to Group in context instructor
fixed some capitalisation
changed targetting to targeting
Merge pull request #325 from andyjohnson/master

Restructure/requirement breakdown of 4.0-4.1.x includes "applicaton" typo
Merge pull request #332 from garemoko/statement-reference-fix

Statement reference fix
Merge pull request #334 from garemoko/formatting-fixes

Formatting fixes
Merge pull request #22 from adlnet/master

Syncing