docs(kuma-requirements): update sidecar container default cpu limit

[ravish-kumar-maersk]

Per Code the default CPU limit for Sidecar Container is 1000m.

This PR will correct the typo in the documentation.

[netlify[bot]]

✅ Deploy Preview for kuma ready!

Name	Link
🔨 Latest commit	1fc3bccdf57d65794708fe3f999b335110ed2d11
🔍 Latest deploy log	https://app.netlify.com/sites/kuma/deploys/65a0fb1d6fde050008d54bcd
😎 Deploy Preview	https://deploy-preview-1573--kuma.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[michaelbeaumont]

Thanks @ravish-kumar-maersk!