fix: Update NGINX One YAML URLs (#792)

Author: mjang

content/nginx-one/nginx-configs/config-sync-groups/_index.md

@@ -2,5 +2,5 @@
 description:
 title: Change multiple instances with one push
 weight: 400
-url: /nginx-one/config-sync-groups
+url: /nginx-one/nginx-configs/config-sync-groups
 ---

content/nginx-one/nginx-configs/staged-configs/_index.md

@@ -2,5 +2,5 @@
 description:
 title: Draft new configurations
 weight: 400
-url: /nginx-one/staged-configs
+url: /nginx-one/nginx-configs/staged-configs
 ---