Chang etext on intro (#5160)

# Description of Changes

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Please provide a summary of the changes, including:

- What was changed
- Why the change was made
- Any challenges encountered

Closes #(issue_number)
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---

## Checklist

### General

- [ ] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ ] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md)
(if applicable)
- [ ] I have performed a self-review of my own code
- [ ] My changes generate no new warnings

### Documentation

- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

### UI Changes (if applicable)

- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)

### Testing (if applicable)

- [ ] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing)
for more details.

frontend/public/locales/zh-CN/translation.toml

@@ -5177,7 +5177,7 @@ upgrade = "立即升级 →"
 freeTitle = "服务器许可证"
 overLimitTitle = "需要服务器许可证"
 overLimitBody = "我们的许可允许每台服务器最多免费 <strong>{{freeTierLimit}}</strong> 名用户。您有 <strong>{{overLimitUserCopy}}</strong> 名 Stirling 用户。为不间断使用，请升级至 Stirling Server 方案 - <strong>无限席位</strong>、PDF 文本编辑，以及 $99/server/mo 的完整管理员控制。"
-freeBody = "我们的 <strong>Open-Core</strong> 许可允许每台服务器最多免费 <strong>{{freeTierLimit}}</strong> 名用户。为无缝扩展并抢先体验全新的 <strong>PDF 文本编辑工具</strong>，推荐 Stirling Server 方案 - 完整编辑与 <strong>无限席位</strong>，$99/server/mo。"
+freeBody = "我们的 <strong>Open-Core</strong> 许可允许每台服务器最多 <strong>{{freeTierLimit}}</strong> 名用户免费使用。为实现不间断扩展，我们推荐 Stirling Server 方案 - <strong>无限席位</strong> 和 <strong>SSO 支持</strong>，$99/server/mo."
 
 [onboarding.desktopInstall]
 title = "下载"