Populate FAQ

The FAQ could be populated with answers to the following questions:

• “Why do we need a working group?”,
• “Why now?”, and
• “Why do we need a specification?”

Current link to the FAQ: https://asciidoc-wg.eclipse.org/about/faq/

Content: https://github.com/EclipseFdn/asciidoc-wg.eclipse.org/blob/main/data/en/faq.json