[WMS] MetadaURL miss xlink:type

[jlacroix]

Hi,

mapwms.c, when printing out MetadataURL via msOWSPrintURLType(), forgets
to print out the xlink:type="simple" attribute, as per other elements of
the same type.

...Can someone commit this to line 1217 in mapwms.c?  Same sort of thing
as in mapwms.c line 1231.

I'm not sure whether I should post this to bugzilla -- it's pretty
trivial.

Thanks

[jlacroix]

I added xlink:type="simple" in WMS MetadataURL.
Marking as FIXED.