Make /ma playerlist pattern less greedy.

This commit changes the pattern of the player list command to one that
isn't quite as greedy. This change is enough to fix issue #676 and thus
allow MobArenaStats to take control of its own command.

The command framework could definitely do with a bit of a rework away
from pattern matching towards aliases, which would prevent similar
issues from cropping up down the line. For now, this is good enough.

Fixes #676

changelog.md

@@ -11,6 +11,8 @@ These changes will (most likely) be included in the next version.
 
 
 ## [Unreleased]
+### Changed
+- The regex pattern for the player list command is now less greedy, so it will only match on `/ma players`, `/ma playerlist`, and `/ma player-list`. The previous pattern matched on anything that starts with `player`, which rendered the `/ma player-stats` command in MobArenaStats impossible to invoke.
 
 ## [0.106] - 2021-05-09
 ### Added

src/main/java/com/garbagemule/MobArena/commands/user/PlayerListCommand.java

@@ -14,7 +14,7 @@ import java.util.List;
 
 @CommandInfo(
     name    = "playerlist",
-    pattern = "player.*|listp.*",
+    pattern = "players|playerlist|player-list",
     usage   = "/ma players (<arena>)",
     desc    = "lists players in an arena",
     permission = "mobarena.use.playerlist"