Updated show.ex file with new game handling logic.

Author: immortal71

copi.owasp.org/lib/copi_web/live/game_live/show.ex

@@ -105,7 +105,7 @@ defmodule CopiWeb.GameLive.Show do
   end
 
   def topic(game_id) do
-    "game:#{game_id}"
+    "game:" <> Integer.to_string(game_id)
   end
 
   @spec card_played_in_round(any, any) :: any
@@ -137,4 +137,4 @@ defmodule CopiWeb.GameLive.Show do
       _ -> "1.0"
     end
   end
-end
+end