Fixing some XML syntax issues with my previous commit at r405777 for ASTERISK-23071

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Merged revisions 405843 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@405844 65c4cc65-6c06-0410-ace0-fbb531ad65f3