Update docs/guides/README.md

Co-authored-by: Alan Dooley <ADubhlaoich@users.noreply.github.com>

Author: 2 people

docs/guides/README.md

@@ -5,7 +5,7 @@ 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.
+  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):