chore: update roadmap content json (#8742)

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

public/roadmap-content/javascript.json

@@ -1344,11 +1344,6 @@
         "title": "JavaScript MDN Docs",
         "url": "https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Expressions_and_Operators#comparison_operators",
         "type": "article"
-      },
-      {
-        "title": "Comparison operators",
-        "url": "https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Expressions_and_Operators#comparison_operators",
-        "type": "article"
       }
     ]
   },