refactor: 지금 많이 찾는 상품 20개 -> 15개

src/main/java/com/sopt/DaisoMall/domain/product/controller/ProductController.java

@@ -48,7 +48,7 @@ public ApiResponse<ProductListResponse> sort(@PathVariable String keyword, Produ
         return ApiResponse.response(HttpStatus.OK.value(), ResponseMessage.SORT_STORE_PRODUCTS_SUCCESS.getMessage(), ProductListResponse.of(slice));
     }
 
-    @Operation(summary = "지금 많이 찾는 상품 조회", description = "지금 많이 찾는 상품 20개를 5개씩 4페이지로 나누어 리스트로 반환합니다.")
+    @Operation(summary = "지금 많이 찾는 상품 조회", description = "지금 많이 찾는 상품 15개를 5개씩 3페이지로 나누어 리스트로 반환합니다.")
     @GetMapping("/popular")
     public ApiResponse<PopularProductListResponse> search() {
         PopularProductListResponse response = popularProductService.getPopularProducts();

src/main/java/com/sopt/DaisoMall/domain/product/repository/ProductRepository.java

@@ -14,7 +14,7 @@
 public interface ProductRepository extends JpaRepository<Product, Long> {
 
     @EntityGraph(attributePaths = "productImages")
-    List<Product> findTop20ByOrderById();
+    List<Product> findTop15ByOrderById();
 
     @Query("""
     SELECT DISTINCT p FROM Product p

src/main/java/com/sopt/DaisoMall/domain/product/service/PopularProductService.java

@@ -16,7 +16,7 @@ public class PopularProductService {
 
     @Transactional(readOnly = true)
     public PopularProductListResponse getPopularProducts() {
-        List<Product> products = productRepository.findTop20ByOrderById();
+        List<Product> products = productRepository.findTop15ByOrderById();
         return PopularProductListResponse.of(products, 5);
     }