Add missing documentation for secret_item_get_schema_name()
Add missing documentation for secret_item_get_schema_name()

GNOME/libsecret,stefwalter/libsecret,GNOME/libsecret,stefwalter/libsecret,Distrotech/libsecret,stefwalter/libsecret,Distrotech/libsecret,GNOME/libsecret,Distrotech/libsecret,stefwalter/libsecret,Distrotech/libsecret,GNOME/libsecret,Distrotech/libsecret,stefwalter/libsecret