[kupfer] doc: Simplify example in PluginAPI

[Ulrik Sverdrup <usverdrup src gnome org>]

commit 8cddd77c1c6d006c7e7a80c3bbb7f5aa1a2de30c
Author: Ulrik Sverdrup <ulrik sverdrup gmail com>
Date:   Sun Mar 20 20:15:19 2011 +0100

    doc: Simplify example in PluginAPI

 Documentation/PluginAPI.rst |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/Documentation/PluginAPI.rst b/Documentation/PluginAPI.rst
index 0e24fa5..efaa0cd 100644
--- a/Documentation/PluginAPI.rst
+++ b/Documentation/PluginAPI.rst
@@ -134,8 +134,7 @@ The complete plugin python code::
             return fileobj.object.endswith(".jpg")
 
         def activate(self, fileobj):
-            image_widget = gtk.Image()
-            image_widget.set_from_file(fileobj.object)
+            image_widget = gtk.image_new_from_file(fileobj.object)
             image_widget.show()
             window = gtk.Window()
             window.add(image_widget)