Add ruby_lsp to language servers

init.lua

@@ -569,6 +569,7 @@ require('lazy').setup({
       --  - settings (table): Override the default settings passed when initializing the server.
       --        For example, to see the options for `lua_ls`, you could go to: https://luals.github.io/wiki/settings/
       local servers = {
+        ruby_lsp = {},
         -- clangd = {},
         -- gopls = {},
         -- pyright = {},