[libwnck] pager: Add missing version information

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 2d2c9aa326e4701e4e7e78984f0d1d988f3cb8f8
Author: Andre Miranda <andre andreldm com>
Date:   Thu Feb 18 22:05:48 2021 -0300

    pager: Add missing version information

 libwnck/pager.c | 2 ++
 libwnck/pager.h | 2 ++
 2 files changed, 4 insertions(+)
---
diff --git a/libwnck/pager.c b/libwnck/pager.c
index f75bdd8..c352733 100644
--- a/libwnck/pager.c
+++ b/libwnck/pager.c
@@ -2435,6 +2435,8 @@ wnck_pager_set_display_mode (WnckPager            *pager,
  *
  * Sets @pager to react to input device scrolling in one of the
  * available scroll modes.
+ *
+ * Since: 3.36
  */
 void
 wnck_pager_set_scroll_mode (WnckPager           *pager,
diff --git a/libwnck/pager.h b/libwnck/pager.h
index aaa667c..ed3988d 100644
--- a/libwnck/pager.h
+++ b/libwnck/pager.h
@@ -90,6 +90,8 @@ typedef enum {
  * Example cycling order with 2 rows and 4 workspaces: 1 2 3 4.
  *
  * Mode defining in which order scrolling on a #WnckPager will cycle through workspaces.
+ *
+ * Since: 3.36
  */
 typedef enum {
   WNCK_PAGER_SCROLL_2D,