docs: 同步 docs/README_CN.md 与 README_EN.md 的最新版本号至 v1.2.5

[glcoge]

• ✅ 接受：与main直接相关的Bug修复：提交到dev分支
• 新增功能类pr需要经过issue提前讨论，否则不会被合并
• 🌐 i18n 提醒：除 bootstrap 或紧急修复外，请不要把非 zh-CN 目标翻译作为常规 GitHub 编辑面；常规翻译以 Crowdin -> l10n_* PR 回流为准，详见 docs/i18n.md

请填写以下内容

（删除掉中括号内的空格，并替换为小写的x）

1. • main 分支 禁止修改，请确认本次提交的分支 不是 main 分支
2. • 我确认我阅读了贡献指南
3. • 本次更新类型为：BUG修复
   • 本次更新类型为：功能新增
4. • 本次更新是否经过测试
5. • 如果本次修改涉及 src/A_memorix，我确认已阅读 src/A_memorix/MODIFICATION_POLICY.md，不涉及则无需勾选
6. 请填写破坏性更新的具体内容（如有）:
7. 请简要说明本次更新的内容和目的：

问题与改动目的

根目录中仓库主页展示的 README.md 已标注最新版本为 v1.2.5，但链接的单语言 docs/README_CN.md 与 docs/README_EN.md 仍停留在 v1.2.3，本次改动同步了这些文档的版本号。

改动内容

仅上述 2 行版本号，无其它改动。

其他信息

• 关联 Issue：无
• 截图/GIF：无
• 附加信息：无

Summary by CodeRabbit

• 文档
  • 更新中文和英文安装说明中的版本号，由 v1.2.3 更新为 v1.2.5。

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Advanced

Run ID: 2c0c6402-3111-4326-ad25-0942a1f43dd9

📥 Commits

Reviewing files that changed from the base of the PR and between d861ec8 and 8acbc31.

📒 Files selected for processing (2)

• docs/README_CN.md
• docs/README_EN.md

Included review availability: Your plan provides up to 8 included reviews per hour; 7 remain after this review.

---

Walkthrough

两个安装文档中的最新版本号均从 v1.2.3 更新为 v1.2.5。其他文档内容未改变。

Changes

文档版本更新

Layer / File(s)	Summary
安装文档版本号同步 docs/README_CN.md, docs/README_EN.md	中文和英文文档的“最新版本”标注均从 v1.2.3 更新为 v1.2.5。

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~3 minutes

Change: Other

Suggested reviewers: sengokucola

Merge Risk: ⚪ Minimal · up to 8acbc

This documentation-only change correctly updates both installation guides to v1.2.5.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	标题准确说明了本次变更：将中文和英文文档的版本号同步为 v1.2.5。标题简洁且与主要改动一致。
Description check	✅ Passed	描述已填写模板要求的分支、贡献指南、更新类型、测试状态、破坏性更新、改动目的、关联 Issue 和附加信息。内容与实际变更一致。
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}