Update lists/practice.json

lists/practice.json

@@ -20,6 +20,11 @@
       "name": "Codeforces",
       "description": "Competitive programming platform with contests and problem sets",
       "link": "https://codeforces.com/"
+    },
+    {
+      "name": "TypeRacer",
+      "description": "Speed typing platform",
+      "link": "https://play.typeracer.com/"
     }
   ]
 }