Remove duplicate arguments in documentation

[mortenhauberg]

As agreed in #1163

[elasticmachine]

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?

[sethmlarson]

Change looks good, can you commit the changes that would be applied to elasticsearch/client as well :)

[mortenhauberg]

Yes - just need to figure out why I see extra spaces in the generated code

[sethmlarson]

Maybe you need to update your local 7.x branch? You could try hitting the "Update branch" in GitHub and then doing a git pull origin dedupe-arguments locally.

[sethmlarson]

This change looks great! Thank you very much 🚀🎉

[mortenhauberg]

I think that was it, @sethmlarson.

Thank you very much for your help

[sethmlarson]

@mortenhauberg Any time! ❤️ I'll give you a mention the next time we release :) If you find any other issues you want to work on I'll be sure to give guidance as well.