The message is bogus, and the link will take you to a fake Facebook login web page set up for harvesting login credentials.
"After users enter the Facebook username and password on the bogus site, they will be automatically redirected to the 'Help' section of the real Facebook website and may not realize until it is too late that they have been on a scam site," points out Hoax-Slayer.
The collected information is then used by the scammers to hijack the users' Facebook accounts and spread other scam through it.
Remember: if you are unsure whether and email such as this one is real or not, it's always best to eschew links and attachments embedded in it.
You can always check the validity of such claims by accessing your account the usual way - via a bookmark or by entering the official login page URL into your browser's address bar.
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