seo: point footer Status link at canonical URL (fix 310 temp redirects) (#261)

The shared footer Status link pointed to https://status.sharpapi.io/en/,
which BetterStack 302-redirects to https://status.sharpapi.io/. Because the
footer is on every docs page, Semrush flagged 310 pages as linking through a
temporary (302) redirect. Link directly to the canonical https://status.sharpapi.io/
(returns 200) to drop the redirect hop site-wide.

Co-authored-by: Codex <codex@sharpapi.local>
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

Author: 3 people

app/[lang]/layout.tsx

@@ -50,7 +50,7 @@ const footerContent = (
     <nav className="sa-footer__links" aria-label="Footer">
       <a href="https://sharpapi.io">Home</a>
       <a href="https://sharpapi.io/pricing">Pricing</a>
-      <a href="https://status.sharpapi.io/en/" target="_blank" rel="noopener noreferrer">Status</a>
+      <a href="https://status.sharpapi.io/" target="_blank" rel="noopener noreferrer">Status</a>
       <a href="https://github.com/Sharp-API/SharpAPI-Documentation" target="_blank" rel="noopener noreferrer">GitHub</a>
     </nav>
   </div>