Fix NMS rendering on mainframe (#1030)

fix: NMS rendering on mainframe

Author: lamATnginx

_banners/eos-nms.md

@@ -0,0 +1,4 @@
+{{< banner "warning" "End of Sale Notice:" >}}
+  <br>
+  <strong>This product is End of Sale.</strong> See our <a href="https://my.f5.com/manage/s/article/K000137989">End of Sale announcement</a> for more details.
+{{</ banner >}}

content/nms/_index.md

@@ -1,10 +1,12 @@
 ---
 title: F5 NGINX Management Suite
-description: A set of tools that enable enterprise scalability, security, observability, and governance.
+nd-subtitle: A set of tools that enable enterprise scalability, security, observability, and governance.
 url: /nginx-management-suite/
-layout: "nms-eos-list"
 cascade:
   logo: "NGINX-Management-Suite-product-icon.svg"
   noindex: true
+  nd-banner: 
+    enabled: true
+    type: deprecation
+    md: _banners/eos-nms.md
 ---
-