tracker-extract: Fixed broken ontology use for JPEGS, dc:indentifier -> dc:identifier
tracker-extract: Fixed broken ontology use for JPEGS, dc:indentifier -> dc:identifier

https://bugzilla.gnome.org/show_bug.cgi?id=726419

hoheinzollern/tracker,outofbits/tracker,hoheinzollern/tracker,hoheinzollern/tracker,outofbits/tracker,outofbits/tracker,hoheinzollern/tracker,outofbits/tracker,hoheinzollern/tracker,outofbits/tracker,hoheinzollern/tracker,hoheinzollern/tracker,outofbits/tracker,outofbits/tracker