Merge branch 'fixsort' into 'staging'

fix sort slice question in export method

See merge request backend/quiz/core!8

tools/tools.go

@@ -37,7 +37,7 @@ func WriteDataToExcel(buffer io.Writer, questions []model.Question, answers []mo
 	}
 
 	sort.Slice(questions, func(i, j int) bool {
-		return questions[i].Page > questions[j].Page
+		return questions[i].Page < questions[j].Page
 	})
 
 	headers := []string{"Данные респондента"}