add mising comma

Author: Andra Mircioiu

content/geoip/release-notes/2026.md

@@ -22,7 +22,7 @@ Effective tomorrow, Wednesday, January 7, 2026, we will be blanking out the city
 - Spain
 - Turkey
 
-We will also be blanking out the subdivision, city and postal fields more often in: 
+We will also be blanking out the subdivision, city, and postal fields more often in: 
 
 - Finland
 - Switzerland