Update meta description

Author: csswizardry

case-studies/iso.md

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 layout: post
 title: "Setting a New Standard for ISO.org"
-meta: "How I helped ISO.org achieve all-green Core Web Vitals for the first time ever. LCP down 29%, CLS down 94%."
+meta: "How I helped ISO.org achieve all-green Core Web Vitals for the first time ever. LCP down 29%; CLS down 94%."
 main: "https://csswizardry.com/img/content/case-studies/iso-org/crux.png"
 permalink: /case-studies/iso-org/
 next-case-study-title: "Cache in the cloud—fixing caching at Cloudinary"