style: update .env.example

Author: jlenon7

.env.example

@@ -3,4 +3,4 @@ DB_PORT="5432"
 DB_DATABASE="secjs"
 DB_USERNAME="root"
 DB_PASSWORD=""
-#DB_URL="postgresql://${DB_USERNAME}:${DB_PASSWORD}@${DB_HOST}:${DB_PORT}/${DB_DATABASE}"
+DB_URL="postgresql://${DB_USERNAME}:${DB_PASSWORD}@${DB_HOST}:${DB_PORT}/${DB_DATABASE}"