chore: update roadmap content json (#8135)

Co-authored-by: kamranahmedse <4921183+kamranahmedse@users.noreply.github.com>

public/roadmap-content/api-design.json

@@ -709,7 +709,7 @@
     "links": [
       {
         "title": "API Authorization Methods",
-        "url": "https://konghq.com/blog/engineering/common-api-authentication-methods",
+        "url": "https://www.pingidentity.com/en/resources/identity-fundamentals/authorization/authorization-methods.html",
         "type": "article"
       }
     ]