Whitespace fix

src/main/java/uk/co/notnull/proxyqueues/queues/ProxyQueueImpl.java

···
     }
 
     public boolean hasPause(Object plugin) {
-       Optional<PluginContainer> container = this.proxyQueues.getProxyServer().getPluginManager().fromInstance(plugin);
+        Optional<PluginContainer> container = this.proxyQueues.getProxyServer().getPluginManager().fromInstance(plugin);
 
         if(container.isEmpty()) {
             throw new IllegalArgumentException("plugin is not registered");