Update mouse event references

[nickmcintyre]

Preparing references in src/events/mouse.js for the new website.

PR Checklist

• npm run lint passes
• [Inline documentation] is included / updated

@Qianqianye @davepagurek @limzykenneth

[Qianqianye]

Thanks @nickmcintyre, could you double check the PR to make sure it passes the checks?

[nickmcintyre]

@Qianqianye they passed locally. It looks like a couple of mouseX and mouseY examples timed out. I don't have permissions to run tests on GitHub–would you please re-run them?

[limzykenneth]

I see you just fixed this as I was leaving the review comment. Will merge once the tests passed.

[nickmcintyre]

@limzykenneth good catch, just noticed this.