[libadwaita] Add missing periods to short class descriptions

[Alexander Mikhaylenko <alexm src gnome org>]

commit c3c2b6de33dab32ae2bcdf6dfa176992104e39ef
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Fri Jul 9 08:55:14 2021 +0200

    Add missing periods to short class descriptions

 src/adw-indicator-bin.c | 2 +-
 src/adw-tab-view.c      | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/adw-indicator-bin.c b/src/adw-indicator-bin.c
index 59c391a7..366be27c 100644
--- a/src/adw-indicator-bin.c
+++ b/src/adw-indicator-bin.c
@@ -14,7 +14,7 @@
 /**
  * AdwIndicatorBin:
  *
- * A helper object for [class@Adw.ViewSwitcherButton]
+ * A helper object for [class@Adw.ViewSwitcherButton].
  *
  * The `AdwIndicatorBin` widget shows an unread indicator over the child widget
  * masking it if they overlap.
diff --git a/src/adw-tab-view.c b/src/adw-tab-view.c
index 8d99e17c..e1cce27c 100644
--- a/src/adw-tab-view.c
+++ b/src/adw-tab-view.c
@@ -18,7 +18,7 @@ static GSList *tab_view_list;
 /**
  * AdwTabView:
  *
- * A dynamic tabbed container
+ * A dynamic tabbed container.
  *
  * `AdwTabView` is a container which shows one child at a time. While it
  * provides keyboard shortcuts for switching between pages, it does not provide