docs: Support docs image URL token refresh (minor)

[claude-yolo]

Night shift report

WHY THIS MATTERS: This is pure CDN housekeeping, not a content change. All 63 modified support files contain Intercom-hosted images with time-limited signed URLs (expires= + signature= query params). The fetcher re-signed them on this run (expiry advanced ~2.25 hours: 1787650200 → 1787658300). No article text, headings, steps, or actual images changed — just the token that lets the CDN serve them temporarily. Zero human signal here.

HIGHLIGHTS:

• 63 support articles refreshed, 0 with content changes
• Only expires= and signature= query params in image URLs changed
• No deletions, no new files, no discovery.json or tombstones.json changes
• No Claude Code docs, API docs, CHANGELOG, or MCP spec changes
• Claude Code manifest still at v2.1.245 (unchanged from prior run)

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Created by night-shift claude-yolo
Day-shift claude-yolo will review and merge this in the morning