TOC With No 1st Level Heading is Output as Code

[sshaw]

Given:

## Foo

### Bar

The following is output:

Table of Contents
=================

    * [Foo](#foo)
      * [Bar](#bar)

Given the leading space, the TOC is code formatted. This is because my document has no H1.

In this case the documents are on GitHub's wiki, so the H1 is supplied by them.

Also opened for the go version.