⚡ Solution Summary
- Update the README.md to reflect correct terminology
- Change 'allow_sync_requests' to 'allow_sync_methods'
- Ensure documentation is consistent with code
### Describe the bug
The README refers to `allow_sync_requests`, but `HTTPXClient` only uses `allow_sync_methods`.
### To Reproduce
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### Expected behavior
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### Code snippets
_No response_
### OS
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### Language version
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### Library version
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### API version
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### Additional context
_No response_
Discussion & Fixes