fix(langSmith-docs): runTree run_type params in TS

[Makoq]

Maybe it's an error in the page log_traces_to_project.

In the example of Typescript code, the first param of RunTree is "run_type" rather than "runType".

This PR is for fixing this error to avoid misguiding new developers.

[vercel[bot]]

Someone is attempting to deploy a commit to the LangChain Team on Vercel.

A member of the Team first needs to authorize it.

[jacoblee93]

Hey - really sorry for missing this. Fixed in #799

[Makoq]

That's OK. But to my regret, my PR was actually earlier.