Update private-link-faq.yml

updating private endpoint FAQ with below FAQ:

Question: can we link multiple private DNS zones with the same name?

Answer: Creating multiple zones with the same name for a single virtual network is not supported.

Author: Yunus-MSFT

articles/private-link/private-link-faq.yml

@@ -56,6 +56,11 @@ sections:
         answer: |
           Yes. You can have multiple Private Endpoints in same VNet or subnet. They can connect to different services.  
 
+      - question: |
+          can we link multiple private DNS zones with the same name? 
+        answer: |
+          No. Creating multiple zones with the same name for a single virtual network is not supported.  
+
       - question: |
           Do I require a dedicated subnet for Private Endpoints? 
         answer: |