Fix broken navbar/homepage links: getting-started → intro

getting-started no longer exists after zrok restructure.
Navbar and homepage card now point to intro instead.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: nicoalba

unified-doc/src/pages/index.tsx

@@ -107,7 +107,7 @@ export default function Home(): ReactNode {
                                         zrok is an open-source, self-hostable sharing platform that simplifies shielding and sharing network services or files.
                                     </div>
                                     <div className="card__footer">
-                                        <Link className="button button--primary button--block" to={useBaseUrl('/docs/zrok/getting-started')}>Go to zrok</Link>
+                                        <Link className="button button--primary button--block" to={useBaseUrl('/docs/zrok/intro')}>Go to zrok</Link>
                                     </div>
                                 </div>
                             </div>

unified-doc/src/theme/Navbar/Content/index.tsx

@@ -28,7 +28,7 @@ const nfFrontDoorDocs = {to: `${DOCS_PREFIX}/frontdoor/intro`, label: 'Frontdoor
 const onPremDocs = {to: `${DOCS_PREFIX}/selfhosted/intro`, label: 'Self-Hosted'};
 const zlanDocs = {to: `${DOCS_PREFIX}/zlan/intro`, label: 'zLAN'};
 const ozDocs =  {to: `${DOCS_PREFIX}/openziti/learn/introduction`, label: 'OpenZiti'};
-const zrokDocs = {to: `${DOCS_PREFIX}/zrok/getting-started`, label: 'zrok'};
+const zrokDocs = {to: `${DOCS_PREFIX}/zrok/intro`, label: 'zrok'};
 
 const openZitiNav: Item[] = [
     {
@@ -97,7 +97,7 @@ const zlanNav: Item[] = [
 const zrokNav: Item[] = [
     {
         label: 'zrok Docs',
-        to: `${DOCS_PREFIX}/zrok/getting-started`,
+        to: `${DOCS_PREFIX}/zrok/intro`,
         position: 'left',
         type: 'dropdown',
         items: [