update JPS url

[skip ci]

Author: graycat27

README.md

@@ -2,4 +2,4 @@
 某サバのThePitに似ているプラグインです
 
 ---
-© [JPS](https://japanpvpserver.net), 2023. All rights reserved.
+© [JPS](https://jps.gg/), 2023. All rights reserved.