Revert "fix: disable ts indenting for Ruby"

This reverts commit 7892c0c354.

init.lua

@@ -891,14 +891,8 @@ require('lazy').setup({
       ensure_installed = { 'bash', 'c', 'diff', 'html', 'lua', 'luadoc', 'markdown', 'markdown_inline', 'query', 'vim', 'vimdoc' },
       -- Autoinstall languages that are not installed
       auto_install = true,
-      highlight = {
-        enable = true,
-        -- Some languages depend on vim's regex highlighting system (such as Ruby) for indent rules.
-        --  If you are experiencing weird indenting issues, add the language to
-        --  the list of additional_vim_regex_highlighting and disabled languages for indent.
-        additional_vim_regex_highlighting = { 'ruby' },
-      },
-      indent = { enable = true, disable = { 'ruby' } },
+      highlight = { enable = true },
+      indent = { enable = true },
     },
     -- There are additional nvim-treesitter modules that you can use to interact
     -- with nvim-treesitter. You should go explore a few and see what interests you: