雨果博客文章标题中的Markdown支持？

Hugo has its front matter where it supports TOML format.

+++
date = "2016-11-15T09:36:44+05:30"
draft = true
title = "Grab it for $100 $40"
+++

Here I used <s>$100</s> to strike through $100, but I am unable to do the same in hugo post, inside that front matter. So Hugo doesn't support markdown in title?, Is there any workaround for it?

You could use

{{ .Title | markdownify }}

in your layout that is generating the title. It is usually found at layouts/.