Links to KubeEdge Documentation and Setup KubeEdge doesnot work

[Shivang Rawat]

Describe the bug
A clear and concise description of what the bug is.
when we click the KubeEdge Documentation or Setup KubeEdge link, it gives 404 error.
To Reproduce
Steps to reproduce the behavior:

1. Go to 'https://kubeedge.io/blog/cncf-sandbox-announcement'
2. Scroll down to 'Today we announce the acceptance of KubeEdge under the CNCF sandbox.'
3. See error

[Shivang Rawat]

/assign

[nikhilchauhangithub]

/assign