docs: Revise installation commands in studio.mdx

[mcavdar]

Overview

Since we're creating a new project without using any command-line tool (i.e. we're creating the files manually), pip install -e . doesn't make sense. I'm replacing it with the dependencies langchain and langchain-openai.

If we run it anyway, we get this error:
ERROR: .... does not appear to be a Python project: neither 'setup.py' nor 'pyproject.toml' found.

Type of change

Type: [Update existing documentation /bug]

Related issues/PRs

• GitHub issue:
• Feature PR:

• Linear issue:
• Slack thread:

Checklist

• I have read the contributing guidelines
• I have tested my changes locally using docs dev
• All code examples have been tested and work correctly
• I have used root relative paths for internal links
• I have updated navigation in src/docs.json if needed

(Internal team members only / optional): Create a preview deployment as necessary using the Create Preview Branch workflow

Additional notes

[eyurtsev]

It should be pip install or uv sync

There's expected to be a dependencies file in the root folder

[mcavdar]

I don't think that page says anything about there being an expected dependencies file in the root folder. If that's required, then we need to update the previous steps to match the approach shown here: https://docs.langchain.com/oss/python/langgraph/local-server (i.e. Create a LangGraph app)

But for the LangChain documentation page, it's better to keep the example small.