libfeedback: Indicate that the library is cross desktop

The only non generic thing is that we pick up the sound
scheme from GNOME when available but we'd happily extend
that to other DEs.

Signed-off-by: Guido Günther <agx@sigxcpu.org>

libfeedback/meson.build

@@ -71,7 +71,7 @@ pkgconfig.generate(
   version: meson.project_version(),
   name: 'Feedback',
   filebase: 'libfeedback-@0@'.format(apiversion),
-  description: 'GNOME feedback library',
+  description: 'Cross desktop feedback library',
   requires: 'gio-2.0',
   install_dir: join_paths(libfeedback_libdir, 'pkgconfig'),
 )