fix: check permission node example

Signed-off-by: ItsNeil17 <neil@willofsteel.me>

Author: ItsNeil17

content/docs/en/guides/plugin/permission-management.mdx

@@ -39,6 +39,5 @@ perms.removeUserPermission(playerUUID, permissions);
 To check if a player has a specific permission node, you can use the `hasPermission` method.
 
 ```java
-PermissionsModule perms = PermissionsModule.get();
-boolean hasPermission = perms.hasPermission(playerUUID, "permission.node");
+boolean hasPermission = PermissionsModule.hasPermission(playerUUID, "permission.node");
 ```