Update notes for submitted changes

* Man page for cfn-init
Update notes for submitted changes

* Man page for cfn-create-aws-symlinks
Update notes for submitted changes

* Man page for cfn-get-metadata
Update notes for submitted changes

* Man page for cfn-hup
Update notes for submitted changes

* Man page for cfn-push-stats
Update notes for submitted changes

* Man page for cfn-signal