Add a DocumentDB Kubernetes Operator promotion page (#65)

* Add Kubernetes operator promotion page

Create a dedicated DocumentDB Kubernetes Operator landing page, add homepage and docs entry points, and align the copy and styling with the rest of the site while highlighting local, hybrid, and multi-cloud workflows.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Remove operator local guides CTA

Remove the "View local install guides" buttons from the DocumentDB Kubernetes Operator landing page so the page stays focused on the operator quick start and repository links.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Refine operator benefit cards

Replace the generic plus icon in the operator benefits section with clearer icons, shorten the card copy, and give the grid more room so the section reads faster.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Modify words

* Improve Kubernetes operator page and lint config

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Reorder operator entry points

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Refine operator page wording

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

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Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: guanzhousongmicrosoft

app/components/Code.tsx

@@ -21,5 +21,5 @@ export default function Index({
         {code}
       </SyntaxHighlighter>
     </section>
-  )
+  );
 }

app/components/Index.tsx

@@ -1,4 +1,4 @@
-'use client'
+"use client";
 
 import Link from 'next/link';
 import { usePathname } from 'next/navigation';

app/components/Navbar.tsx

@@ -75,6 +75,12 @@ export default function Navbar() {
             >
               Download
             </Link>
+            <Link
+              href="/kubernetes-operator"
+              className="text-gray-300 hover:text-blue-400 transition-colors duration-200 font-medium"
+            >
+              K8s Operator
+            </Link>
             <Link
               href="/blogs"
               className="text-gray-300 hover:text-blue-400 transition-colors duration-200 font-medium"