All sections duplicate the top level heading

[fbristow]

The top level heading appears in the table of contents and appears twice on every page. This is my own mistake: I duplicated the title of the document in Pandoc's YAML front-matter in the top-level heading for each section, e.g.,:

---
title: This is the document's title
---

This is the document's title
======================

This happened when I was splitting the topics into different files, then just kept happening because I was copy/pasting folders.

I'll work on this piecemeal, and then try to remember to close this issue when I'm done. It will be painful because I will need to bring up all headers by one level.

• [x] Topic 1
• [x] Topic 2
• [x] Topic 3
• [x] Topic 4
• [x] Topic 5
• [ ] Topic 6
• [ ] Topic 7
• [ ] Topic 8
• [ ] Topic 9
• [ ] Topic 10
• [ ] Topic 11
• [ ] Topic 12

[fbristow]

Topic 1 complete in 3b09fd0.

[fbristow]

Topic 2 complete in b8cc4b7.

[fbristow]

Topic 3 complete in 641fc6e.

[fbristow]

Topic 4 complete in ece7bfe.

[fbristow]

Topic 5 complete in 77cc6d7.