refactor: fix cards files names by removing duplicating postfix (#4376)

tests/api.test.js

@@ -3,7 +3,7 @@ import axios from "axios";
 import MockAdapter from "axios-mock-adapter";
 import api from "../api/index.js";
 import { calculateRank } from "../src/calculateRank.js";
-import { renderStatsCard } from "../src/cards/stats-card.js";
+import { renderStatsCard } from "../src/cards/stats.js";
 import { CONSTANTS, renderError } from "../src/common/utils.js";
 import { expect, it, describe, afterEach } from "@jest/globals";