Removed duplicate entries (1.6.1-1.6.3) in changelog.
Fix task description
Update CHANGELOG.md
Merge pull request #7750 from nbrl/changelog-duplicates

Removed duplicate entries (1.6.1-1.6.3) in changelog.
Merge pull request #7761 from debrice/devel

Fix task description
Merge branch 'devel' of https://github.com/ansible/ansible into tidy