Merge branch 'main' into JeffGuKang-patch-1

.github/ISSUE_TEMPLATE/config.yml

.github/release-drafter.yml

.github/workflows/ci-master.yml

.github/workflows/publish-gem.yml

.prettierignore

.prettierrc

404.html

Dockerfile

README.md

_config.yml

_includes/fix_linenos.html

_includes/footer_custom.html

_includes/head.html

_includes/header_custom.html

_includes/nav.html

_includes/vendor/anchor_headings.html

_layouts/default.html

_sass/code.scss

_sass/content.scss

_sass/navigation.scss