Update .env-example

Author: nitin27may

.env-example

@@ -1,11 +1,12 @@
 # .env
 ENVIRONMENT=Production
 
-# SQL Server Connection
-SQL_SERVER=mssql
-SQL_DATABASE=Contacts
-SQL_USER=sa
-SQL_PASSWORD=PasYourPassword123
+# PostgreSQL Connection
+POSTGRES_HOST=postgres
+POSTGRES_PORT=5432
+POSTGRES_DB=Contacts
+POSTGRES_USER=sa
+POSTGRES_PASSWORD=PasYourPassword123
 
 # JWT Settings
 JWT_SECRET=THIS  USED TO SIGN AND VERIFY JWT TOKENS, REPLACE IT WITH YOUR OWN SECRET, IT CAN BE ANY STRING