Updated example for current version of python interface

docs/doc-python.txt

@@ -220,8 +220,7 @@ Example Logic: Extract Textures
         size = bd.gettexturesize()
         for texture in tx.gettextures():
             with open(filename + str(i) + ".dds", "wb") as fw:
-                image = cast(texture.data, POINTER(c_ubyte * size))[0]
-                fw.write(image)
+                fw.write(texture)
             i += 1
 
 Example Logic: Iterate through all MeshHeaders and Meshes: