Update email template

curl --request PUT \
  --url https://www.renovationfind.com/rest-api-v1/customer-feedback-system/settings/email-body \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data @- <<EOF
{
  "customEmailMessage": "Thank you for choosing us! We'd love to hear about your experience."
}
EOF

{
  "success": true,
  "message": "<string>"
}