[web/views/cwuser] fix encoding of FoafView to application/rdf+xml

--HG--
branch : 3.27

cubicweb/web/views/cwuser.py

@@ -57,7 +57,7 @@ class FoafView(EntityView):
 
     title = _('foaf')
     templatable = False
-    content_type = 'text/xml'
+    content_type = 'application/rdf+xml'
 
     def call(self):
         self.w(u'''<?xml version="1.0" encoding="%s"?>