[3.11] gh-101760: Improve the imaplib.IMAP4 example (GH-101764) (#117192

)

Co-authored-by: LilKS <1244886+LilKS@users.noreply.github.com>
Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>

Doc/library/imaplib.rst

@@ -632,7 +632,7 @@ retrieves and prints all messages::
 
    import getpass, imaplib
 
-   M = imaplib.IMAP4()
+   M = imaplib.IMAP4(host='example.org')
    M.login(getpass.getuser(), getpass.getpass())
    M.select()
    typ, data = M.search(None, 'ALL')