Updated URL to point to the archived version.

Rows:

[enwiki]> select rev_id,rev_user,rev_user_text from revision where rev_user_text='Llama man';
+-----------+----------+---------------+

+-----------+----------+---------------+

+-----------+----------+---------------+
27 rows in set (0.00 sec)

Renamed on db36 using:

UPDATE revision SET rev_user_text='Malcom', rev_user=56586 WHERE rev_user_text='Llama man' AND rev_user=1661697 LIMIT 1;

Which created a false name 'Malcom' (my bad):

[enwiki]> select rev_id,rev_user,rev_user_text from revision where rev_user_text='Malcom' and rev_user=56586;
+-----------+----------+---------------+

+-----------+----------+---------------+

+-----------+----------+---------------+
29 rows in set (0.00 sec)

Fixed the username with :

UPDATE revision SET rev_user_text='Malcolm' WHERE rev_user_text='Malcom' AND rev_user=56586 LIMIT 1;