[gnome-software] trivial: Fix since tags for functions backported to 3.22

[Kalev Lember <klember src gnome org>]

commit 67e4777f2986f5fd165dc3241acb5f28914019f5
Author: Kalev Lember <klember redhat com>
Date:   Mon Nov 7 17:49:27 2016 +0100

    trivial: Fix since tags for functions backported to 3.22

 src/gs-app-list.c |    2 +-
 src/gs-app.c      |    2 +-
 src/gs-plugin.c   |    2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/src/gs-app-list.c b/src/gs-app-list.c
index cf9b401..ccb369e 100644
--- a/src/gs-app-list.c
+++ b/src/gs-app-list.c
@@ -152,7 +152,7 @@ gs_app_list_add (GsAppList *list, GsApp *app)
  * Removes an application from the list. If the application does not exist the
  * request is ignored.
  *
- * Since: 3.24
+ * Since: 3.22
  **/
 void
 gs_app_list_remove (GsAppList *list, GsApp *app)
diff --git a/src/gs-app.c b/src/gs-app.c
index 9b98c1b..a87228b 100644
--- a/src/gs-app.c
+++ b/src/gs-app.c
@@ -2794,7 +2794,7 @@ gs_app_is_installed (GsApp *app)
  *
  * Returns: %TRUE if the app is updatable, %FALSE otherwise.
  *
- * Since: 3.24
+ * Since: 3.22
  **/
 gboolean
 gs_app_is_updatable (GsApp *app)
diff --git a/src/gs-plugin.c b/src/gs-plugin.c
index 3f034b0..8cab6d7 100644
--- a/src/gs-plugin.c
+++ b/src/gs-plugin.c
@@ -1217,7 +1217,7 @@ gs_plugin_cache_lookup (GsPlugin *plugin, const gchar *key)
  *
  * Removes an application from the per-plugin cache.
  *
- * Since: 3.24
+ * Since: 3.22
  **/
 void
 gs_plugin_cache_remove (GsPlugin *plugin, const gchar *key)