fix: 修正部分代码问题

src/main/java/com/seecoder/BlueWhale/ServiceImpl/ProductServiceImpl.java

@@ -5,7 +5,9 @@ import com.seecoder.BlueWhale.PO.Product;
 import com.seecoder.BlueWhale.Service.ProductService;
 import com.seecoder.BlueWhale.VO.ProductVO;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
 
+@Service
 public class ProductServiceImpl implements ProductService {
 
     @Autowired