Standardize placeholder formatting in documentation

[devin-ai-integration]

Standardize placeholder formatting in documentation

Summary

Standardizes variable placeholder formatting across all Firecrawl documentation to use consistent <placeholder> format. Changes YOUR_API_KEY to <YOUR_API_KEY> while preserving the fc- prefix as fc-<YOUR_API_KEY> throughout 333 documentation files and code snippets.

This addresses user confusion where some users were literally including angle brackets in their API calls due to inconsistent placeholder formatting between <crawl_id> (with brackets) and YOUR_API_KEY (without brackets).

Key changes:

• Bearer YOUR_API_KEY → Bearer <YOUR_API_KEY>
• Bearer fc-YOUR_API_KEY → Bearer fc-<YOUR_API_KEY>
• api_key="YOUR_API_KEY" → api_key="<YOUR_API_KEY>"
• Similar patterns across all languages and API versions

Review & Testing Checklist for Human

• Spot-check 3-5 random files to verify changes look correct and no unintended modifications occurred
• Verify fc- prefix preservation - search for fc-<YOUR_API_KEY> pattern appears where expected
• Confirm no functional code changed - only documentation/examples should be affected, not actual API logic
• Test a few code examples with new placeholder format to ensure they render properly in docs

Notes

• Large scope: 333 files affected with systematic find-and-replace operations
• Multi-language: Changes applied across English, Spanish, French, Japanese, Portuguese, and Chinese documentation
• Covers both v1 and v2 APIs and all snippet files

Link to Devin run: https://app.devin.ai/sessions/8ebad8e9145f476591e8243f626ec49c
Requested by: @micahstairs
Linear: ENG-3078

[devin-ai-integration]

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