Guide does not indicate that the ribbon cable port should be UNLATCHED before attempting to remove the ribbon cable, I strongly suggest revising this as someone unfamiliar with these style of ports may assume that the ribbon cable is a compression fit and just needs to be "pulled" free of the port.
This is a terrible idea that will potentially result in tearing the ribbon! Please consider revising guide to add a step to indicate the proper method/detail for unlatching the LCD ribbon port! Thanks :)