fix: Fix error message

src/components/Demo.tsx

@@ -56,7 +56,10 @@ export function Demo({ onVerified }: DemoProps): React.ReactElement {
 				return onVerified && onVerified(r);
 			})
 			.catch((err: Error) => {
-				if (err.message.includes("The result contains 0 rows")) {
+				// Message can be:
+				// Results contain 0 rows
+				// The result contains 0 rows
+				if (err.message.includes("0 rows")) {
 					throw new Error(
 						`The email ${email} can't be verified within 1 minute. This is because the email provider imposes obstacles to prevent real-time email verification, such as greylisting.
 Please try again later.`