Fix typo in processing

[netlify[bot]]

✅ Deploy Preview for imgproxy-docs ready!

Name	Link
🔨 Latest commit	15dbc6c99fe64eb9d0517235b43ef6cc7c40b316
🔍 Latest deploy log	https://app.netlify.com/sites/imgproxy-docs/deploys/6635706331ca0b0008668c35
😎 Deploy Preview	https://deploy-preview-1--imgproxy-docs.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.

[DarthSim]

Thanks!