For regular users, just visit https://btcguide.github.io/ to see GitHub Pages render this content as a static website.
For advanced users, you can host this locally with jekyll (setup instructions: Ubuntu; macOS):
$ bundle exec jekyll serve
Then visit: http://127.0.0.1:4000
To spell check (takes ~3s):
$ pyspelling -c .spellcheck.yml
Spelling check passed :)
Notes:
.wordlist.txt
for all the exception words.$ brew install aspell && pip install pyspelling
are needed.