Move guide to top of list

Author: Kate Osborn

docs/guides/README.md

@@ -4,9 +4,9 @@ This directory contains guides for configuring NGINX Kubernetes Gateway for vari
 
 ## Contents
 
+- [Routing Traffic to Your Application](routing-traffic-to-your-app.md): How to use NGINX Kubernetes Gateway to route
+  all ingress traffic to your Kubernetes application.
 - [Securing Traffic using Let's Encrypt and Cert-Manager](integrating-cert-manager.md): Shows how to secure
   traffic from clients to NGINX Kubernetes Gateway with TLS using Let's Encrypt and Cert-Manager.
 - [Using NGINX Kubernetes Gateway to Upgrade Applications without Downtime](upgrade-apps-without-downtime.md):
   Explains how to use NGINX Kubernetes Gateway to upgrade applications without downtime.
-- [Routing Traffic to Your Application](routing-traffic-to-your-app.md): How to use NGINX Kubernetes Gateway to route
-  all ingress traffic to your Kubernetes application.