is contribution.md is out of date?

What problem do you want to solve?

These days I am trying to fix an issue with this project, follow the instruction illustrated in CONTRIBUTING.md, but found it is so hard to setup a local environment supporting debugging code, yes there is tox script which helps run test case as a black box, but how to setup dependency/debug some specific code(unittest) is not mentioned at all.

e.g. it depends on few projects under https://github.com/open-telemetry/opentelemetry-python.git, we need pip install them manually first(that is my practice, I might make silly mistake).

I think we might need add a little more explanation in order to help the new contributor to setup their working environments. I summarized a little, hopefully it is useful for the new contributors, thanks

1. setup a clean python venv, suggest pyenv to manage xenv, windows fork at https://github.com/pyenv-win/pyenv-win
2. git clone https://github.com/open-telemetry/opentelemetry-python.git
   install dependencies:
   pip install -e ./opentelemetry-api -e ./opentelemetry-sdk -e ./opentelemetry-semantic-conventions -e ./tests/opentelemetry-test-utils
3. git clone https://github.com/open-telemetry/opentelemetry-python-contrib.git
   install the dependencies for a specific project in this repo, e.g.
   pip install -e instrumentation/opentelemetry-instrumentation-httpx
4. pytest test_httpx_integration.py

Describe the solution you'd like

n/a

Describe alternatives you've considered

No response

Additional Context

No response

Would you like to implement a fix?

None

Start with CONTRIBUTING.md and compare its setup instructions with the issue's clean Python virtual environment and dependency installation steps. Follow the setup for the referenced OpenTelemetry repositories, then run pytest test_httpx_integration.py to verify the documented workflow. Done means contributors can install the required dependencies and debug a specific test using the guide.