Hyperlint Automation: Meta Description Fixes (#20201)

* Fix issue: WorkspaceTaskSubType.META_DESCRIPTION

* Update src/content/docs/speed/optimization/content/speed-brain.mdx

* Update src/content/docs/speed/optimization/content/speed-brain.mdx

* Update src/content/docs/speed/optimization/content/speed-brain.mdx

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Co-authored-by: hyperlint-ai[bot] <154288675+hyperlint-ai[bot]@users.noreply.github.com>
Co-authored-by: angelampcosta <[email protected]>

Author: hyperlint-ai[bot]

src/content/docs/speed/optimization/content/speed-brain.mdx

@@ -5,6 +5,7 @@ sidebar:
   order: 9
   badge:
     text: Beta
+description: Learn how Speed Brain enhances web performance by prefetching likely next pages, improving metrics like LCP and TTFB.
 ---
 
 import { FeatureTable, TabItem, Tabs } from "~/components";