First, note that the effect's location was changed a couple times in the last few versions so there's no knowing how temporary this is atm (since they reverted changes).
Second, "find" as in "find the big rectangle" is too laconic to actually act as a guide. A guide should have a direction, a waypoint, and some more directions.
Also the wiki, as every wiki on this planet, should be editable by everyone. If you really, REALLY want to make it the description, you can do it yourself.
Also, at the part with the strange light(bulb+blob=blub) you do not have to "repeat the action", as in leaving and coming back in, you just have to mash the button until it turns bright yellow and the sound effect of it changes.
I can also nitpick the grammar but there's no point to that. This isn't a real, important wiki after all.