chore: update roadmap content json (#7241)

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

public/roadmap-content/nodejs.json

@@ -1244,8 +1244,8 @@
         "type": "article"
       },
       {
-        "title": "Explore top posts about JavaScript",
-        "url": "https://app.daily.dev/tags/javascript?ref=roadmapsh",
+        "title": "Explore top posts about NestJS",
+        "url": "https://app.daily.dev/tags/nestjs?ref=roadmapsh",
         "type": "article"
       },
       {