docs: correct python.raise_exception example

[puneetdixit200]

Summary

• update the python.raise_exception example to pass the exception class and message as positional arguments
• keep name= as operation metadata rather than an argument to the exception constructor

Fixes #1261

Validation

• uv run python -m compileall -q src/pyinfra/operations/python.py
• uv run ruff check src/pyinfra/operations/python.py
• uv run ruff format --check src/pyinfra/operations/python.py
• uv run --group test python scripts/lint_arguments_sync.py
• DOCS_VERSION=latest uv run --python 3.14 --group docs sphinx-build -b html docs build/docs
• scripts/dev-lint.sh
• git diff --check
• git diff HEAD^ --check

The generated build/docs/operations/python.html contains the corrected positional NotImplementedError example.

AI usage disclosure

OpenAI GPT-5 assisted with repository navigation, drafting the focused documentation edit, and selecting validation commands. I reviewed the final change and validation output and understand the doc behavior being corrected.

Checklist

• Pull request is based on the default branch (3.x at this time)
• Pull request includes tests for any new/updated operations/facts (docs-only correction; no operation behavior changed)
• Pull request includes documentation for any new/updated operations/facts
• Tests pass (see scripts/dev-test.sh)
• Type checking & code style passes (see scripts/dev-lint.sh)
• Pull request title follows the conventional commits format

[Fizzadar]

LGTM, thanks for fixing @puneetdixit200!