[Document] Stack is LIFO not FIFO

[Joey Lim]

Hi, not sure if the book issues are meant to be opened here, but I did not know where to post it.
I was wondering if there was a mistake in this section as you mentioned Stack but described it as FIFO even though it is usually LIFO and the pancake example sounds like a LIFO example as well?

[Austin Bricker]

You are correct. Fixed in cc7d586