Update contributing.md

[brownbaerchen]

Due Diligence

• General:
  • title of the PR is suitable to appear in the Release Notes
• Implementation:
  • unit tests: all split configurations tested
  • unit tests: multiple dtypes tested
  • NEW unit tests: MPS tested (1 MPI process, 1 GPU)
  • benchmarks: created for new functionality
  • benchmarks: performance improved or maintained
  • documentation updated where needed

Description

Small update to the contributing guide. Next to one small typo fix, the only change I propose is to recommend installing the code in editable mode with pip install -e. This way, edits to the code actually show up in the locally installed version. This is the simplest way that I know of that achieves this.

Changes proposed:

• Recommend installing in editable mode
• fix typo

Type of change

Documentation update

[ClaudiaComito]

Thanks @brownbaerchen !