broker缺少存储相关参数配置描述

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**BUG REPORT**

1. Please describe the issue you observed:

缺少关于 storePathRootDir ， storePathCommitLog，storePathConsumeQueue，storePathIndex，storeCheckpoint，abortFile 参数说明和描述

2. Please tell us about your environment:
https://rocketmq.apache.org/docs/4.x/parameterConfiguration/02server/

3. Other information (e.g. detailed explanation, logs, related issues, suggestions how to fix, etc):

**FEATURE REQUEST**

1. Please describe the feature you are requesting.

2. Provide any additional detail on your proposed use case for this feature.

2. Indicate the importance of this issue to you (blocker, must-have, should-have, nice-to-have). Are you currently using any workarounds to address this issue?

4. If there are some sub-tasks using -[] for each subtask and create a corresponding issue to map to the sub task:

- [sub-task1-issue-number](example_sub_issue1_link_here): sub-task1 description here,
- [sub-task2-issue-number](example_sub_issue2_link_here): sub-task2 description here,
- ...

Start with the linked RocketMQ 4.x server parameter configuration page at docs/4.x/parameterConfiguration/02server/. Add descriptions for storePathRootDir, storePathCommitLog, storePathConsumeQueue, storePathIndex, storeCheckpoint, and abortFile, then verify that each storage-related parameter is documented clearly on the page.

Written by the indexing model from the issue text.