feat: add markdown linting/formatting

lua/plugins/formatting.lua

@@ -6,6 +6,7 @@ return {
             scss = { "prettierd" },
             html = { "djlint" },
             lua = { "stylelua" },
+            markdown = { "prettierd" },
             javascript = { "prettierd" },
             javascriptreact = { "prettierd" },
             json = { "prettierd" },

lua/plugins/linting.lua

@@ -1,4 +1,4 @@
-return {
+return { {
     "mfussenegger/nvim-lint",
     opts = {
         events = { "BufWritePost", "BufReadPost", "InsertLeave" },
@@ -23,4 +23,16 @@ return {
             end,
         })
     end,
-}
+}, {
+    "jose-elias-alvarez/null-ls.nvim",
+    event = { "BufWritePost", "BufReadPost", "InsertLeave" },
+    opts = function()
+        local null_ls = require("null-ls")
+        local diagnostics = null_ls.builtins.diagnostics
+        return {
+            sources = {
+                diagnostics.vale,
+            }
+        }
+    end
+} }

lua/plugins/lsp.lua

@@ -22,6 +22,7 @@ return {
                 "eslint_d",
                 "prettierd",
                 "stylua",
+                "vale",
             },
             automatic_installation = true,
         }