refactor : 이메일 검증 API // endpoint수정 (#360)

Author: hwangjokim

src/main/java/com/gamzabat/algohub/feature/user/service/EmailService.java

@@ -25,7 +25,7 @@
 @Slf4j
 public class EmailService {
 	private static final String FROM_ADDRESS = "noreply@algohub.kr";
-	private static final String EMAIL_VERIFICATION_CLIENT_ENDPOINT = "https://algohub.kr/sign-up";
+	private static final String EMAIL_VERIFICATION_CLIENT_ENDPOINT = "https://algohub.kr/signup";
 	private static final String RESET_PASSWORD_CLIENT_ENDPOINT = "https://algohub.kr/reset-password";
 	private final JavaMailSender mailSender;
 	private final TemplateEngine templateEngine;