Update customize-semgrep-precommit.md

[tembalii]

Thanks for improving Semgrep Docs 😀

Please ensure

• [ ] A subject matter expert (SME) reviews the content
• [ ] A technical writer reviews the content or PR
• [x] This change has no security implications or else you have pinged the security team
• [x] Redirects are added if the PR changes page URLs
• [ ] If you have changed any header tag links (doc/#this-kind-of-anchor), update all instances of that link

[netlify[bot]]

✅ Don't forget to add /docs at the end of the deploy preview site URL!

Name	Link
🔨 Latest commit	1b6ac5bb2c6d28b87623b37b640195c742b19ef2
🔍 Latest deploy log	https://app.netlify.com/projects/semgrep-docs-prod/deploys/6877b7351310bd0008920275
😎 Deploy Preview	https://deploy-preview-2243--semgrep-docs-prod.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

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