The pre-build scripts does the following:
1. Downloads the documentation from electron/electron and data/blog
from electron/electronjs.org
2. Moves the files to the right folders based on the contents of
`docs-reorg.json`
3. Add frontmatter to each file
4. Fixes internal links and multiline image titles
5. Generates the sidebar using the folder structure
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Fix#6
Ref: Solves parts of #2
David Sanders
Erick Zhao
Antón Molleda
Samuel Attard