I was tempted and looked at the doc, it is a safe sigil of a daemon from Lesser Key of Solomon. There is nothing to worry. 
Comics were heavily influenced by occult so the original person who created the project description and benefits must have brought in the original sigil of the daemon sharing the same character name in the comics.
Don’t worry!
Go through this thread and I agree with Sammy now more than before that believing in an entitity does more harm than good though I mentioned in the thread that in a place I lived earlier I had seen some dark apparitions.
Along with the Angelic Intercession stick to the video shared above by SoulStar33. You are safe and nothing to worry!
Hope you will feel better soon and keep us updated.