[Docs] Docs review.

Thanks for your error report and we appreciate it a lot.

Checklist

1. I have searched related issues but cannot get the expected help.
2. I have read the FAQ documentation but cannot get the expected help.
3. The bug has not been fixed in the latest version.

Describe the bug

1. https://github.com/open-mmlab/mmengine/blob/main/docs/zh_cn/tutorials/basedataset.md#%E6%95%B0%E6%8D%AE%E6%A0%87%E6%B3%A8%E6%96%87%E4%BB%B6%E8%A7%84%E8%8C%83
   "标注文件必须为 json 或 yaml，yml 或 pickle，pkl 格式" -> "标注文件必须为 json 或 yaml(yml) 或 pickle(pkl) 格式"
2. https://github.com/open-mmlab/mmengine/blob/main/docs/zh_cn/tutorials/config.md#%E8%B7%A8%E9%A1%B9%E7%9B%AE%E4%BD%BF%E7%94%A8%E9%85%8D%E7%BD%AE%E6%96%87%E4%BB%B6
   "model = get_model('mmdet::faster_rcnn/faster_rcnn_r50_fpn_1x_coco', pretrained=True)" 和在配置文件中跨库继承配置文件用法不同，这里不包含文件后缀名，是否会使用户感到混淆？