Update documentation/trunking-guide.html
Update documentation/trunking-guide.html

Co-authored-by: Dan Caseley <2591e5f46f28d303f9dc027d475a5c60d8dea17a@caseley.me.uk>
guusdk/Openfire,guusdk/Openfire,guusdk/Openfire,igniterealtime/Openfire,guusdk/Openfire,igniterealtime/Openfire,guusdk/Openfire,igniterealtime/Openfire,igniterealtime/Openfire,igniterealtime/Openfire