📖 Update readme with addon contributions link

[mikeshng]

Summary

Update the README with addon contribution repo link

Related issue(s)

Fixes #

[mikeshng]

Doc update like this one should not trigger e2e.
Did I not do something in the PR?

[xuezhaojun]

Doc update like this one should not trigger e2e. Did I not do something in the PR?

No, I met the same e2e which should not occur, it seems like some thiing addon-framework e2e depends on changed, for example the images it use or the clusteradmin.

[mikeshng]

Doc update like this one should not trigger e2e. Did I not do something in the PR?

No, I met the same e2e which should not occur, it seems like some thiing addon-framework e2e depends on changed, for example the images it use or the clusteradmin.

Thanks and go to sleep 😅

[xuezhaojun]

/lgtm

[zhujian7]

/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: mikeshng, zhujian7

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