[gtk/matthiasc/glshader-node: 16/18] gtk-demo: Tweak the transition demo text

[Matthias Clasen <matthiasc src gnome org>]

commit cda8bb438433937430b73f5919c0602e14a06d22
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Sep 28 12:41:18 2020 -0400

    gtk-demo: Tweak the transition demo text
    
    Fix some types, and say a bit more here.

 demos/gtk-demo/gltransition.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)
---
diff --git a/demos/gtk-demo/gltransition.c b/demos/gtk-demo/gltransition.c
index 32cba33457..b66da253f3 100644
--- a/demos/gtk-demo/gltransition.c
+++ b/demos/gtk-demo/gltransition.c
@@ -2,10 +2,14 @@
  * #Keywords: OpenGL, shader
  *
  * Create transitions between pages using a custom fragment shader.
- * The examples here are taken from gl-transitions.com, and you
- * can edit the transision code itself on the last page of the stack.
  *
- * It also shows some sample fire effects on the buttons.
+ * The example transitions here are taken from gl-transitions.com, and you
+ * can edit the shader code itself on the last page of the stack.
+ *
+ * The transitions work with arbitrary content. We use images, shaders
+ * GL areas and plain old widgets to demonstrate this.
+ *
+ * The demo also shows some sample fire effects on the buttons.
  */
 
 #include <math.h>