style: format code with Gofumpt

This commit fixes the style issues introduced in a89838b according to the output
from Gofumpt.

Details: #955

presets/menu_order.go

@@ -16,10 +16,10 @@
 type MenuOrderBuilder struct {
 	p *Builder
 	// string or *MenuGroupBuilder
-	order    []interface{}
-	modelMap map[string]*ModelBuilder
+	order             []interface{}
+	modelMap          map[string]*ModelBuilder
 	menuComponentFunc func(menus []h.HTMLComponent, menuGroupSelected, menuItemSelected string) h.HTMLComponent
-	once     sync.Once
+	once              sync.Once
 }
 
 type menuOrderItem struct {
@@ -31,9 +31,9 @@
 	return &MenuOrderBuilder{p: b}
 }
 
 func (b *MenuOrderBuilder) MenuComponentFunc(fn func(menus []h.HTMLComponent, menuGroupSelected, menuItemSelected string) h.HTMLComponent) *MenuOrderBuilder {
 	b.menuComponentFunc = fn
 	return b
 }
 
 func (b *MenuOrderBuilder) isMenuGroupInOrder(mgb *MenuGroupBuilder) bool {