fixed incorrect appendix reference
Merge pull request #443 from phamdt/conversion_typo

fixed incorrect appendix reference
Update Description of LRS Action for dupe activit.

As documented in Issue #445
Added "used" - typo
Merge pull request #446 from andyjohnson/master

Update Description of LRS Action for duplicate activities
Merge branch 'master' into translate_ru
translate pulled from ADL
4.1.12 Data Constraints