Typo fix for Kibana 8.1.0 release notes

[emrcbrn]

Correct typo from automatatically to automatically

Summary

See https://www.elastic.co/guide/en/kibana/current/release-notes-8.1.0.html#breaking-changes-8.1.0, typo is visible there. This PR intends to fix it.

Checklist

Delete any items that are not applicable to this PR.

• Any text added follows EUI's writing guidelines, uses sentence case text and includes i18n support

For maintainers

• This was checked for breaking API changes and was labeled appropriately

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[emrcbrn]

Just tagging you @kilfoyle as a starter reference, not sure if anyone else needs to review/approve this, just a minor typo fix. Thanks!

[georgewallace]

LGTM

[kilfoyle]

Sorry I missed this one @emrcbrn! Must have gotten lost in my inbox. :-)