Rephrase GitHub Actions CI/CD card description on home page (#107)

Reword to avoid implying that testing and validation are AI-powered —
only code reviews are qualified as AI.

Author: beran-t

docs.mdx

@@ -67,6 +67,6 @@ The documentation is split into three main sections:
     Build AI agents that see, understand, and control virtual Linux desktops using E2B Desktop sandboxes.
   </Card>
   <Card title="GitHub Actions CI/CD" icon="gears" href="/docs/use-cases/ci-cd">
-    Run AI-powered code review, testing, and validation in secure E2B sandboxes from your GitHub Actions workflows.
+    Use E2B sandboxes in your GitHub Actions workflows to run testing, validation, and AI code reviews.
   </Card>
 </CardGroup>