[LucasBassetti]

Description

Updates the documentation site for react-simple-chatbot 1.0.1.

• Live examples use 1.0.1, so every demo, the home page chatbot and the playground get the refreshed look and the aligned messages.
• Changelog: new 1.0.1 entry (new look and bug fixes), marked as latest.
• Theming guide: the default fontFamily is now the system font, with how to keep monospace.
• Custom components guide: falsy values (0, '', false) are now saved as the step value, so the caution about them is replaced by a note.

The published site in the branch root is rebuilt by the Site workflow after the merge.

Related issue

None.

Type of change

• feat: new feature
• fix: bug fix
• docs: documentation
• refactor / perf / test
• build / ci / chore
• Breaking change (the title has !, and the migration is described below)

How has this been tested?

Check	Result
astro check	✅ 0 errors
Build with internal link validation	✅
All 34 pages load with the live demos and no console errors, in Chromium, Firefox and WebKit	✅
Flows: simple form, BMI, end callback, options, Wikipedia search, floating, search, legacy redirects, playground	✅ 10/10
BMI example messages aligned, dark and light mode	✅

Breaking changes

None.

Checklist

• The title follows Conventional Commits
• npm run check and npm run build pass
• Tests cover the change (browser tests above)
• The README is updated (no change needed)