fix:edit employee_list API

internal/logic/employee/get_employee_list_logic.go

@@ -36,7 +36,7 @@ func (l *GetEmployeeListLogic) GetEmployeeList(req *types.EmployeeListReq) (*typ
 	var predicates []predicate.Employee
 	predicates = append(predicates, employee.OrganizationIDEQ(organizationId))
 
-	if req.Title != nil && len(*req.Title) > 0 {
+	if req.Title != nil && *req.Title != "" {
 		predicates = append(predicates, employee.TitleContains(*req.Title))
 	}
 	if req.CategoryId != nil && *req.CategoryId > 0 {