Fixing...

pom.xml

@@ -36,7 +36,7 @@
                 </configuration>
             </plugin>
         </plugins>
-        <finalName>BungeeCore</finalName>
+        <finalName>bungeecore</finalName>
     </build>
 
     <dependencies>

src/de/steamwar/bungeecore/commands/BanCommand.java

@@ -38,7 +38,7 @@ public class BanCommand extends BasicCommand {
     @Override
     public void execute(CommandSender sender, String[] args) {
         if(args.length < 4){
-            BungeeCore.send(sender, BungeeCore.CHAT_PREFIX + "/ban [Spieler] [dd.mm.yyyy oder perma] [hh:mm] [Grund]");
+            BungeeCore.send(sender, BungeeCore.CHAT_PREFIX + "/ban [Spieler] [dd.mm.yyyy oder perma] {hh:mm} [Grund]");
             return;
         }
 

src/de/steamwar/bungeecore/commands/MuteCommand.java

@@ -34,7 +34,7 @@ public class MuteCommand extends BasicCommand {
     @Override
     public void execute(CommandSender sender, String[] args) {
         if(args.length < 4){
-            BungeeCore.send(sender, BungeeCore.CHAT_PREFIX + "/mute [Spieler] [dd.mm.yyyy oder perma] [hh:mm] [Grund]");
+            BungeeCore.send(sender, BungeeCore.CHAT_PREFIX + "/mute [Spieler] [dd.mm.yyyy oder perma] {hh:mm} [Grund]");
             return;
         }