Thank you for your comments.
Well, although I introduced to you what other people have said, I think I would like to express my own opinion.
Probably, a probable cause is a mere "spelling error."
But there are some strange things.
First, the "Tetragrammaton" is the Divine Name.
Probably, as for it, they must never make a spelling error.
Because it (God's name) is very important for them/JWs.
Second, that Hebrew font is somewhat strange.
Therefore, there is a common feature in "H" (he) and "W" (waw).
And, the letter "Y" looks like an apostrophe by that Hebrew font.
And also a part of last letter "H" looks like an apostrophe.
It is hard for me to show people the Tetragrammaton (YHWH) like "666."
It seems to have been done so "by design", IMO.
Therefore, I used the word "subliminal" for the title of this thread.
What I can say certainly now is that that Tetragrammaton is a spelling error.
And that" Awake!" is a very rare article which shows it.