Fixed typo in documentation

[bot101]

Summary

This PR fixes a typo in the documentation. Just started learning ElasticSearch by the way.

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
• Documentation was added for features that require explanation or tutorials
• This was checked for keyboard-only and screenreader accessibility
• This renders correctly on smaller devices using a responsive layout. (You can test this in your browser
• This was checked for cross-browser compatibility

[kibanamachine]

Since this is a community submitted pull request, a Jenkins build has not been kicked off automatically. Can an Elastic organization member please verify the contents of this patch and then kick off a build manually?

[cla-checker-service]

❌ Author of the following commits did not sign a Contributor Agreement:
92d83be

Please, read and sign the above mentioned agreement if you want to contribute to this project

[elasticmachine]

Pinging @elastic/kibana-docs (Team:Docs)

[lukeelmers]

Thanks for the contribution @bot101! If you are able to sign the contributor agreement then we can get this reviewed for you

[gchaps]

Closing this PR as this content was change in #81093.