.......... [ZBX-954] fix a typo, pointed out by volter

git-svn-id: svn://svn.zabbix.com/trunk@51076 f4e7fd02-d210-4e34-a1e0-d4093fb66cc2
.......... [ZBX-954] fix more typos in comments

git-svn-id: svn://svn.zabbix.com/trunk@51077 f4e7fd02-d210-4e34-a1e0-d4093fb66cc2