fix namespace for span content
fix namespace for span content

Change-Id: Id4f179f4a9ed5c299eabe69f01a4295fad937500

LibreOffice/libetonyek,LibreOffice/libetonyek,freedesktop-unofficial-mirror/libreoffice__libetonyek,freedesktop-unofficial-mirror/libreoffice__libetonyek,freedesktop-unofficial-mirror/libreoffice__libetonyek,LibreOffice/libetonyek