docs: add TiEQi-A2A as known A2A agent deployment + Tieqi Tech as partner

[iTiEQi]

Description

• Follow the CONTRIBUTING Guide.
• Make your Pull Request title follow the Conventional Commits specification.
• Ensure the tests and linter pass.
• Appropriate docs were updated (if necessary)

Fixes #1901

Changes

1. docs/partners.md: Add Tieqi Tech after Thoughtworks
2. docs/community.md: Add TiEQi-A2A as known A2A agent deployment

[gemini-code-assist]

Code Review

This pull request adds a new "Known A2A Agent Deployments" section to the community documentation featuring the TiEQi-A2A agent, and adds Tieqi Tech to the partners list. Feedback points out that the partner entry was added twice and is incorrectly sorted alphabetically, suggesting to remove the duplicate and place it after Thoughtworks.

[gemini-code-assist]

The partner Tieqi Tech (铁旗科技) has been added twice. Additionally, to maintain alphabetical order, this entry should be placed after Thoughtworks (since "Tieqi" alphabetically follows "Thoughtworks").

Please remove the duplicate and consider moving the single entry below Thoughtworks.

Suggested change

	- [Tieqi Tech (铁旗科技)](https://itieqi.com)
	- [Tieqi Tech (铁旗科技)](https://itieqi.com)
	- [Tieqi Tech (铁旗科技)](https://itieqi.com)

[iTiEQi]

Thanks for the review! We have fixed all the issues mentioned - the partner entry is now correctly placed after Thoughtworks with no duplicates, the skills count is updated to 29 across 10 categories, and the URL is corrected to www.itieqi.com. The CI checks are pending approval - could you please take a look when you get a chance?