I'll go further...
hedit will open it up.
To list lines: /L
If you see a line with Alsherok, type /G ## (where ## is the line number)
then type: /R Alsherok MUDNAME (where MUDNAME is the name you'd rather be there in place of Alsherok).
For more info on in-game editing, type /? while in the editor.
You also have to save the helpfile via: HSET SAVE
Lastly, HSET is what you'd use to modify everything else in a helpfile, but it has a rather weird syntax. For example, to change the level of the helpfile IMOTD to 102 (usually 101), you'd type: HSET LEVEL 102 IMOTD. For more info, type HELP HSET, and also HELP HEDIT.