Bug: Multiple Broken External Links on the KubeEdge Website

## Describe the bug

Several external links referenced on the KubeEdge website appear to be broken or inaccessible. A link validation scan identified multiple URLs returning error responses such as **504 Gateway Timeout**, **412 Precondition Failed**, **415 Unsupported Media Type**, **418 I'm a teapot**, and **Empty Response**.

These broken links negatively impact user experience and may prevent users from accessing partner, ecosystem, and related project resources.

## To Reproduce

1. Go to https://kubeedge.io/.
2. Navigate through pages containing partner, ecosystem, or external resource links.
3. Click on the external links listed below.
4. Observe that some links fail to load or return error responses.

### Examples of affected links

- https://www.bocloud.com.cn/product/BeyondEdge (504 Gateway Timeout)
- https://www.szdgri.com/ (Empty Response)
- https://cucc.wocloud.cn/ (412 Precondition Failed)
- http://www.jylink.com/ (418 I'm a teapot)
- https://xh-iot.net/ (504 Gateway Timeout)
- https://www.caict.ac.cn/ (412 Precondition Failed)
- https://www.sel.zju.edu.cn/ (Empty Response)
- https://www.open-edge-hpc-initiative.org/ (415 Unsupported Media Type)
- https://www.lookcan.ai/ (Empty Response)

## Expected behavior

All external links referenced on the KubeEdge website should be reachable and direct users to valid, accessible destinations.

## Actual behavior

Multiple external links return HTTP errors, time out, or fail to respond, preventing users from accessing the intended resources.

## Screenshots

Attached screenshot showing the broken link scan results.

## Desktop (please complete the following information)

- OS: Any
- Browser: Chrome, Firefox, Safari, Edge
- Version: Latest

## Smartphone (please complete the following information)

- Device: Any
- OS: Any
- Browser: Chrome, Safari, or default browser
- Version: Latest

## Additional context

A review of external links across the website may be needed to:
- Remove obsolete links.
- Update links that have changed.
- Verify whether certain websites intentionally block automated requests.
- Ensure all partner and ecosystem references remain accessible.

This issue was identified through a broken-link validation scan that reported multiple inaccessible external URLs.