more formatters, some cleaning

lua/plugins/conform.lua

@@ -6,6 +6,8 @@ return {
         -- Define your formatters
         formatters_by_ft = {
             yaml = { "yamlfmt" },
+            markdown = { "mdformat" },
+            bash = { "shfmt" },
             --lua = { "stylua" },
             --python = { "isort", "black" },
             --javascript = { "prettierd", "prettier", stop_after_first = true },
@@ -18,8 +20,8 @@ return {
         --format_on_save = { timeout_ms = 500 },
         -- Customize formatters
         formatters = {
-            shfmt = {
-                prepend_args = { "-i", "2" },
+            yamlfmt = {
+                prepend_args = { "-formatter", "retain_line_breaks=true,indentless_arrays=true" },
             },
         },
     }