docs(agno): align integration guide with scrapegraph-py 2.0.0

[VinciGit00]

Summary

Updates the Agno integration page to match the toolkit shipped in agno-agi/agno PR #7584 (requires scrapegraph-py>=2.0.0). The previous docs still referenced the pre-v2 constructor signature (smartscraper=True, markdownify=True, …), which no longer compiles against the current ScrapeGraphTools.

What changed

• Constructor flags renamed to match the actual API: enable_smartscraper, enable_markdownify, enable_crawl, enable_searchscraper, enable_scrape.
• Install instruction now pins scrapegraph-py>=2.0.0 and adds an SGAI_API_KEY export snippet.
• New scrape example — raw HTML fetch, which the v2 toolkit exposes.
• Configuration table rewritten: every parameter the constructor actually accepts, including api_key, render_heavy_js, and all.
• Combining tools / heavy-JS snippets updated to use enable_* names and render_heavy_js=True.
• Agentic crawler references removed (the endpoint was removed in the v2 SDK).

Why

Running the current Quick Start from the docs today raises TypeError: ScrapeGraphTools.__init__() got an unexpected keyword argument 'smartscraper'. This PR brings the guide back in sync with what pip install agno "scrapegraph-py>=2.0.0" actually gives you.

Type of change

• Documentation update

Checklist

• Examples match the public method signatures in agno.tools.scrapegraph.ScrapeGraphTools
• Install command and env var reflect the v2 SDK requirement
• Self-review completed
• No other PR addresses this (PR #7584 on agno updates the toolkit; this PR updates our docs)

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