fix class func missing self

src/ReforgerStatsBot.py

@@ -48,7 +48,7 @@ class ReforgerStats(commands.Bot):
       exception = f"{type(e).__name__}: {e}"
       print(exception)
 
-  async def createLeaderboardEmbed(players: list[dict]) -> dict:
+  async def createLeaderboardEmbed(self, players: list[dict]) -> dict:
     sorted_players = sorted(players, key=lambda a: a["kills"], reverse=True)
     description = ""
     rank = 1
@@ -99,4 +99,4 @@ class ReforgerStats(commands.Bot):
 
     # Close SSH && SFTP sessions and file
     self.sftp.close()
-    self.ssh.close()
+    self.ssh.close()