[grilo] core: Make the property name match the metadata key name

[Bastien Nocera <hadess src gnome org>]

commit d24cdcfb1dc221d4b3efe5e7c5a75d2212058d37
Author: Bastien Nocera <hadess hadess net>
Date:   Tue Dec 16 17:32:23 2014 +0100

    core: Make the property name match the metadata key name
    
    GRL_METADATA_KEY_PUBLICATION_DATE should really correspond to
    "publication-date" not "publishing-date".
    
    https://bugzilla.gnome.org/show_bug.cgi?id=741605

 src/grl-metadata-key.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/grl-metadata-key.c b/src/grl-metadata-key.c
index 0f434df..981d2c7 100644
--- a/src/grl-metadata-key.c
+++ b/src/grl-metadata-key.c
@@ -65,8 +65,8 @@ grl_metadata_key_setup_system_keys (GrlRegistry *registry)
                                              NULL);
 
   grl_registry_register_metadata_key_system (registry,
-                                             g_param_spec_boxed ("publishing-date",
-                                                                 "Publishing date",
+                                             g_param_spec_boxed ("publication-date",
+                                                                 "Publication date",
                                                                  "When the media was originally published",
                                                                  G_TYPE_DATE_TIME,
                                                                  G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE),