format with gofumpt (#18184)

* gofumpt -w -l .

* gofumpt -w -l -extra .

* Add linter

* manual fix

* change make fmt

modules/markup/csv/csv.go

@@ -22,8 +22,7 @@ func init() {
 }
 
 // Renderer implements markup.Renderer for csv files
-type Renderer struct {
-}
+type Renderer struct{}
 
 // Name implements markup.Renderer
 func (Renderer) Name() string {
@@ -83,7 +82,7 @@ func writeField(w io.Writer, element, class, field string) error {
 
 // Render implements markup.Renderer
 func (Renderer) Render(ctx *markup.RenderContext, input io.Reader, output io.Writer) error {
-	var tmpBlock = bufio.NewWriter(output)
+	tmpBlock := bufio.NewWriter(output)
 
 	// FIXME: don't read all to memory
 	rawBytes, err := io.ReadAll(input)