Update last tix code example for 3.x, as already done for previous examples.

terryjreedy · terryjreedy · commit 2a6ac15f263c · 2011-01-24T20:48:40.000Z
diff --git a/Doc/library/tkinter.tix.rst b/Doc/library/tkinter.tix.rst
@@ -499,8 +499,8 @@ Tix Commands
 
    To view the current settings, the common usage is::
 
-      import Tix
-      root = Tix.Tk()
+      from tkinter import tix
+      root = tix.Tk()
       print(root.tix_configure())
 
 
