Corrected MS Office mailcap entry

.mailcap

@@ -1,6 +1,6 @@
 text/html;          lynx %s; nametemplate=%s.html
 text/html;          lynx -dump -width=78 -nolist %s; nametemplate=%s.html; copiousoutput
 application/pdf;    evince %s
-application/vnd;    libreoffice
+application/vnd.openxmlformats-officedocument.wordprocessingml.document;   libreoffice '%s'
 image/jpeg;         feh --scale-down %s
 image/png;          feh --scale-down %s