Ok i am not sure it is official pancake telegram being hacked or it was fake account from the beginning. I mean it has almost 238k followers. Now telegram showing scam along with it. And it's latest message asks for synchronizing your wallet for fixing issue which is clearly scam. So whatever the case beware of it.
Mate it's totally fake, I am in that official PancakeSwap telegram channel and it was not hacked or whatsoever, I suggest that you make some proper research about the official PancakeSwap social media channels so that you will not become a victim of those shady copycats information channels who just created to scam people so keep safe everyone.