update manifests wg readme

[juliusvonkohout]

@andreyvelich @kimwnasptd

as requested in kubeflow/website#3724 (comment)

[juliusvonkohout]

@kubeflow/kubeflow-steering-committee

[andreyvelich]

Thanks for updating Manifests WG readme.

You might need to update the wgs.yaml like in this PR: #713 and run generator to re-create the README..

CC current Manifests WG Leads.

/assign @yanniszark @kimwnasptd @elikatsis @StefanoFioravanzo @PatrickXYS

[juliusvonkohout]

@andreyvelich @james-jwu i hope it is correct now and also in synchronization with kubeflow/manifests#2629

[juliusvonkohout]

@StefanoFioravanzo can you give an explicit /lgtm again despite kubeflow/manifests#2629 (comment)

[StefanoFioravanzo]

/lgtm

[juliusvonkohout]

@elikatsis can you also approve again, despite kubeflow/manifests#2629 (comment)

@PatrickXYS i think is gone from the project for a very long time.

[terrytangyuan]

/lgtm
/approve

[google-oss-prow]

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