Update quarantine-faq.yml

The following acronym is not spelled out at all in the article:

FAQ - frequently asked questions

Author: MithunRathinam

defender-office-365/quarantine-faq.yml

@@ -29,7 +29,7 @@ summary: |
   - [Microsoft Defender for Office 365 Plan 1 and Plan 2](mdo-about.md#defender-for-office-365-plan-1-vs-plan-2-cheat-sheet)
   - [Microsoft Defender XDR](/defender-xdr/microsoft-365-defender)
 
-  This article provides frequently asked questions and answers about quarantined email messages for Microsoft 365 organizations with mailboxes in Exchange Online, or standalone Exchange Online Protection (EOP) organizations without Exchange Online mailboxes.
+  This article provides frequently asked questions (FAQ) and answers about quarantined email messages for Microsoft 365 organizations with mailboxes in Exchange Online, or standalone Exchange Online Protection (EOP) organizations without Exchange Online mailboxes.
 
   > [!NOTE]
   > In Microsoft 365 operated by 21Vianet in China, quarantine isn't currently available in the Microsoft Defender portal. Quarantine is available only in the classic Exchange admin center (classic EAC).