[gtk] Builder: Fix a couple of typos in documentation

[Daniel Boles <dboles src gnome org>]

commit 98f0d85c4adf5593ab77bbde5dbebb989f84fb64
Author: Daniel Boles <dboles src gmail com>
Date:   Sun Oct 6 20:48:10 2019 +0100

    Builder: Fix a couple of typos in documentation

 gtk/gtkbuilder.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtkbuilder.c b/gtk/gtkbuilder.c
index c58184af3f..b3f27ade31 100644
--- a/gtk/gtkbuilder.c
+++ b/gtk/gtkbuilder.c
@@ -134,7 +134,7 @@
  * "bind-source" to specify the source object of the binding, and
  * optionally, "bind-property" and "bind-flags" to specify the
  * source property and source binding flags respectively.
- * Internally builder implement this using GBinding objects.
+ * Internally builder implements this using GBinding objects.
  * For more information see g_object_bind_property()
  *
  * Signal handlers are set up with the <signal> element. The “name”
@@ -153,7 +153,7 @@
  * been constructed by GTK+ as part of a composite widget, to set
  * properties on them or to add further children (e.g. the @vbox of
  * a #GtkDialog). This can be achieved by setting the “internal-child”
- * propery of the <child> element to a true value. Note that GtkBuilder
+ * property of the <child> element to a true value. Note that GtkBuilder
  * still requires an <object> element for the internal child, even if it
  * has already been constructed.
  *