.D........ [ZBX-1357] fix a typo in changelog entries

git-svn-id: svn://svn.zabbix.com/trunk@50183 f4e7fd02-d210-4e34-a1e0-d4093fb66cc2
.D........ [ZBX-954] minor changelog entry improvements and fixes

git-svn-id: svn://svn.zabbix.com/trunk@50184 f4e7fd02-d210-4e34-a1e0-d4093fb66cc2