Refine ghast speed message to display human-readable speed names

src/main/java/com/alttd/playerutils/commands/playerutils_subcommands/GhastSpeed.java

@@ -66,7 +66,7 @@ public class GhastSpeed extends SubCommand {
 
         attribute.setBaseValue(newSpeed);
         commandSender.sendRichMessage(Messages.GHAST_SPEED.NEW_SPEED_SET_TO,
-                                      Placeholder.parsed("speed", String.valueOf(newSpeed)));
+                                      Placeholder.parsed("speed", ghastSpeed.name().toLowerCase().replace("_", " ")));
         return true;
     }