fix: correct link for client side game development (#7823)

src/data/roadmaps/server-side-game-developer/server-side-game-developer.json

@@ -6218,7 +6218,7 @@
       "selected": false,
       "data": {
         "label": "Client-side game Development",
-        "href": "https://roadmap.sh/backend",
+        "href": "https://roadmap.sh/game-developer",
         "color": "#FFFFFf",
         "backgroundColor": "#4136D4",
         "style": {
@@ -7515,4 +7515,4 @@
       "type": "smoothstep"
     }
   ]
-}
+}