Docs idea: optional first run for firecrawl-scrape

The CLI docs do a good job separating the web work modes — `scrape` for clean Markdown from specific URLs, `interact` when clicks/forms are needed, and `agent` for longer structured extraction jobs.

One small docs addition that might help new users: an optional quick-try link for the `firecrawl-scrape` Skill, so they can test the Skill inside an OpenClaw/Hermes-style agent before setting up the CLI locally:

[Try Firecrawl Web Scraping Skill in Telegram or WhatsApp](https://app.clawmama.run/skills/1xj0gq/hermes?utm_source=github&utm_medium=issue&utm_campaign=skill_outreach_firecrawl_cli)

It would just be a low-friction first run next to the existing install/auth docs, not a replacement for the local Firecrawl setup.

Start with the existing CLI documentation sections covering scrape, interact, agent, installation, and authentication. Add the optional quick-try link near the setup guidance without replacing local setup instructions, then verify that the link renders correctly and the surrounding guidance remains clear.

Written by the indexing model from the issue text.