fix typo

Author: craigshoemaker

articles/container-apps/TOC.yml

@@ -357,7 +357,7 @@
         - name: Environment-level configuration
           href: ingress-environment-configuration.md
         - name: Application-level configuration
-          href: ingress-how- to.md
+          href: ingress-how-to.md
         - name: Configure IP restrictions
           href: ip-restrictions.md
         - name: Add client certificates