[gnome-software] Added missing comment for the GsApp:description property

[Mario Sanchez Prada <msanchez src gnome org>]

commit ff7ee0671990a048723ffd6467b3fb8623deedf7
Author: Mario Sanchez Prada <mario endlessm com>
Date:   Thu Oct 6 13:29:00 2016 +0100

    Added missing comment for the GsApp:description property

 src/gs-app.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/gs-app.c b/src/gs-app.c
index 12b89a5..d0aef4a 100644
--- a/src/gs-app.c
+++ b/src/gs-app.c
@@ -3449,6 +3449,9 @@ gs_app_class_init (GsAppClass *klass)
                                     G_PARAM_READWRITE | G_PARAM_CONSTRUCT);
        g_object_class_install_property (object_class, PROP_SUMMARY, pspec);
 
+       /**
+        * GsApp:description:
+        */
        pspec = g_param_spec_string ("description", NULL, NULL,
                                     NULL,
                                     G_PARAM_READWRITE | G_PARAM_CONSTRUCT);