fix(playground): no more duplicated url

Author: NaejDoree

playground/misc/misc-2-examples.md

@@ -4,7 +4,6 @@ What's better than learning with examples?
 
 We have published some examples of games made with the CodinGame SDK. Feel free to use them to start your project! 
 
-- [Tic-tac-toe Game](https://github.com/CodinGame/game-tictactoe)
-- [Pong Game](https://github.com/CodinGame/game-pong)
-- [Fishy Adventures (Solo) Game](https://github.com/CodinGame/game-fishy-adventures)
-- [Fishy Adventures (Optimization) Game](https://github.com/CodinGame/game-fishy-adventures)
+- [Tic-tac-toe Game (Multi)](https://github.com/CodinGame/game-tictactoe)
+- [Pong Game (Multi)](https://github.com/CodinGame/game-pong)
+- [Fishy Adventures Game (Solo)](https://github.com/CodinGame/game-fishy-adventures)