chore: update contributing doc script references

[TaylorShane]

Update CONTRIBUTING.md to reference existing scripts

[CLAassistant]

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[gemini-code-assist]

Code Review

This pull request updates the linting and formatting commands in the contribution guidelines (CONTRIBUTING.md). Specifically, it changes the ESLint command to 'npm run lint:ng' and the Prettier command to 'npm run lint:format'. Feedback on the changes suggests retaining the instructions for automatically fixing ESLint findings by updating the command to 'npm run lint:ng -- --fix' instead of removing the section entirely.