Change long feedback forum URL with its short counterpart

Author: nachoalonsoportillo

articles/postgresql/TOC.yml

@@ -879,7 +879,7 @@
       - name: Connect your app's data to Power BI
         href: https://aka.ms/postg-powerbi-vid
   - name: Feedback forum
-    href: https://feedback.azure.com/d365community/forum/c5e32b97-ee24-ec11-b6e6-000d3a4f0da0
+    href: https://aka.ms/pgfeedback
   - name: Region availability
     href: https://azure.microsoft.com/regions/services/
   - name: Support options