Fix alignment of help button in toolbar
Fix alignment of help button in toolbar

zhanghuiguoanlige/editor-legacy,Futuring/editor-legacy,Futuring/editor-legacy,GitbookIO/editor-legacy,KINGSABRI/editor-legacy,gdbooks/editor-legacy,gdbooks/editor-legacy,gdbooks/editor-legacy,KINGSABRI/editor-legacy,Futuring/editor-legacy,KINGSABRI/editor-legacy,GitbookIO/editor-legacy,zhanghuiguoanlige/editor-legacy,GitbookIO/editor-legacy,zhanghuiguoanlige/editor-legacy