Fix now-wrong :keyword: markup. Remove the section about
"exec without namespace" from the "don't" howto since exec()
can't overwrite names in the calling namespace anymore.
diff --git a/Doc/tutorial/controlflow.rst b/Doc/tutorial/controlflow.rst
index 3fedb56..82a8977 100644
--- a/Doc/tutorial/controlflow.rst
+++ b/Doc/tutorial/controlflow.rst
@@ -263,7 +263,7 @@
technically speaking, procedures do return a value, albeit a rather boring one.
This value is called ``None`` (it's a built-in name). Writing the value
``None`` is normally suppressed by the interpreter if it would be the only value
-written. You can see it if you really want to using :keyword:`print`::
+written. You can see it if you really want to using :func:`print`::
>>> fib(0)
>>> print(fib(0))