add a redirection

Author: kengaderdus

.openpublishing.redirection.json

@@ -793,6 +793,13 @@
       "redirect_url": "/azure/active-directory-b2c/configure-authentication-sample-wpf-desktop-app",
       "redirect_document_id": false
     },
+
+    {
+      "source_path_from_root": "/articles/active-directory-b2c/troubleshoot-custom-policies.md",
+      "redirect_url": "/azure/active-directory-b2c/troubleshoot",
+      "redirect_document_id": false
+    },
+
     {
       "source_path_from_root": "/articles/active-directory-b2c/tutorial-single-page-app-webapi.md",
       "redirect_url": "/azure/active-directory-b2c/configure-authentication-sample-spa-app",