Removing 'preview' mention for additional TCP ports on ingress-overview.md

Under the "additional TCP ports" section, we currently reference to installing the latest preview CLI extension for ACA. This feature is no longer preview, and other parts of our docs reference to just installing the latest (GA) extension.

This PR is done to reflect consistency between docs and this feature.

Author: Ajsalemo

articles/container-apps/ingress-overview.md

@@ -83,7 +83,7 @@ With TCP ingress enabled, your container app:
 In addition to the main HTTP/TCP port for your container apps, you might expose additional TCP ports to enable applications that accept TCP connections on multiple ports.
 
 > [!NOTE]
-> This feature requires using the latest preview version of the container apps CLI extension.
+> To use this feature, you must have the container apps CLI extension. Run `az extension add -n containerapp` in order to install the latest version of the container apps CLI extension.
 
 The following apply to additional TCP ports:
 - Additional TCP ports can only be external if the app itself is set as external and the container app is using a custom VNet.