Issue #27209: Fix doctests in Doc/library/email*.rst

Patch by Jelle Zijlstra.
diff --git a/Doc/library/email.iterators.rst b/Doc/library/email.iterators.rst
index f3e9e18..d53ab33 100644
--- a/Doc/library/email.iterators.rst
+++ b/Doc/library/email.iterators.rst
@@ -50,9 +50,9 @@
 
    .. testsetup::
 
-      >>> import email
-      >>> from email.iterators import _structure
-      >>> somefile = open('Lib/test/test_email/data/msg_02.txt')
+      import email
+      from email.iterators import _structure
+      somefile = open('../Lib/test/test_email/data/msg_02.txt')
 
    .. doctest::
 
@@ -74,9 +74,9 @@
                   text/plain
           text/plain
 
-   .. testsetup::
+   .. testcleanup::
 
-      >>> somefile.close()
+      somefile.close()
 
    Optional *fp* is a file-like object to print the output to.  It must be
    suitable for Python's :func:`print` function.  *level* is used internally.