Missing KubeEdge v1.20.0 Release Details on Website

[harshita9104]

Describe the bug
The latest KubeEdge v1.20.0 release is not mentioned in the website documentation or blog. Users looking for information about this release may not find the necessary details.

To Reproduce
Steps to observe the issue:

Go to the (https://kubeedge.io/).
Check the Documentation and Blog sections.
Observe that v1.20.0 is missing from the listed releases.

Expected behavior
The website should have a release note section mentioning v1.20.0.
A blog post or documentation update should cover the key changes in this release.

[harshita9104]

/assign