Update editor page: reason-mode -> rescript-mode

Author: fhammerschmidt

pages/docs/manual/latest/editor-plugins.mdx

@@ -16,4 +16,4 @@ We don't officially support these; use them at your own risk!
 
 - [Neovim Tree-sitter](https://github.com/nkrkv/nvim-treesitter-rescript)
 - [IDEA](https://github.com/reasonml-editor/reasonml-idea-plugin)
-- [Emacs](https://github.com/reasonml-editor/reason-mode) (only legacy `v8.0.0` Reason/OCaml syntax support)
+- [Emacs](https://github.com/jjlee/rescript-mode)