Add RykenSlimeCustomizer (#282)

* add RykenSlimeCustomizer

* fix wiki link

* grammar fix

pages/Addons.md

@@ -95,6 +95,7 @@ GeneticChickengineering-Reborn | kii-chan-reloaded, ybw0014 | <details><summary>
 Ultimate Generators 2 | Ybw0014 | <details><summary>expand</summary>Ultimate Generators 2 is a Slimefun addon that adds more ultimate generators. It is based on UltimateGenerators by freeze-dolphin.</details> | [Readme](https://github.com/GuizhanCraft/UltimateGenerators2) | [Github](https://github.com/GuizhanCraft/UltimateGenerators2) | [Builds](https://blob.build/project/UltimateGenerators2)
 MoreResearches | JustAHuman_xD | <details><summary>expand</summary>MoreResearches is a new simple Slimefun Addon that gives server owners/admins the ability to create custom researches!</details> | [Readme](https://github.com/JustAHuman-xD/MoreResearches#readme) | [Github](https://github.com/JustAHuman-xD/MoreResearches) | [Builds](https://blob.build/project/MoreResearches)
 SlimefunTranslation | ybw0014 | <details><summary>expand</summary>SlimefunTranslation aims to translate Slimefun items (including addons) without modifying the actual item, but the packets.</details> | [Wiki](https://docs.ybw0014.dev/slimefun-translation/) | [GitHub](https://github.com/ybw0014/SlimefunTranslation) | [Builds](https://blob.build/project/SlimefunTranslation)
+RykenSlimeCustomizer | lijinhong11 | <details><summary>expand</summary>RykenSlimeCustomizer lets you make your custom addon in a new way.</details> | [Wiki](https://rsc.hiworldmc.com) | [GitHub](https://github.com/SlimefunReloadingProject/RykenSlimeCustomizer-EN) | [Releases](https://github.com/SlimefunReloadingProject/RykenSlimeCustomizer-EN/releases)
 
 ## :gift: Third-Party Plugins
 These Plugins are not Addons, but they do integrate with Slimefun in some way or another.