Update localization subproject info

[zacharysarah]

This PR updates subproject info for SIG Docs. Specifically, it removes reference to kubernetes-docs-** repositories, which are slated for archival pending approval/merge of kubernetes/website#10485.

This PR goes stale on Friday, October 19. Feel free to close this PR if it's still open on or after October 19, 2018.

Dependencies

PR	Description	✔️
kubernetes/website#10485	Update localization guidelines and workflows
kubernetes/org#154	Archive localization repos

/sig docs

[zacharysarah]

UPDATE: Fixed!

I see this error and will update the PR and description accordingly:

I1005 00:35:17.989] ====================================================================
I1005 00:35:17.989] 1 mismatches were detected.
I1005 00:35:17.989] Do not manually edit sig-list.md or README.md files inside the sig folders.
I1005 00:35:17.989] Instead make your changes to sigs.yaml, then run `make`, and then
I1005 00:35:17.989] commit your changes to sigs.yaml and any generated docs.
I1005 00:35:17.989] ====================================================================

[zacharysarah]

This PR includes changes proposed in #2751. To avoid merge conflicts and/or the need to rebase, I recommend closing that PR in favor of this one.

/cc @Bradamant3

[zacharysarah]

/hold
Waiting for dependencies to merge

[zacharysarah]

@cblecker 👋 kubernetes/website#10485 has merged.

/hold cancel

[cblecker]

/approve

leaving LGTM for a sig-docs lead :)

[k8s-ci-robot]

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This pull-request has been approved by: cblecker

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[zacharysarah]

/assign @chenopis

[Bradamant3]

/lgtm