fix: bind the last two stale numbers (#38)

CLAUDE.md advertised 80+ LLMs and the README said 40+ chains — the catalog
serves 66 and Tatum exposes exactly 40. Both missed by earlier passes because
they were phrased differently from everything that was grepped for.

Audit is now clean outside CHANGELOG, which is history and stays as written.

Co-authored-by: 1bcMax <viewitter@gmail.com>

Author: VickyXAI

CLAUDE.md

@@ -1,6 +1,6 @@
 # BlockRun LLM SDK (Python)
 
-Python SDK for 80+ LLMs plus image/video/music/speech generation, standalone search, multi-chain RPC, and Pyth-backed market data — all gated by USDC micropayments via x402. No API keys — wallet signature is authentication.
+Python SDK for <!-- br:models.chatVisible -->66<!-- /br:models.chatVisible --> LLMs plus image/video/music/speech generation, standalone search, multi-chain RPC, and Pyth-backed market data — all gated by USDC micropayments via x402. No API keys — wallet signature is authentication.
 
 ## Commands
 

README.md

@@ -797,7 +797,7 @@ Supported stock markets: `us, hk, jp, kr, gb, de, fr, nl, ie, lu, cn, ca`.
 
 ## Multi-chain RPC (`RpcClient`)
 
-Standard JSON-RPC 2.0 access to 40+ chains through one endpoint — Ethereum,
+Standard JSON-RPC 2.0 access to <!-- br:chains.rpc -->40<!-- /br:chains.rpc --> chains through one endpoint — Ethereum,
 Base, Solana, Polygon, BSC, Arbitrum, Optimism, Avalanche, Bitcoin, Sui, and
 more (powered by Tatum's RPC gateway). No API key, no per-chain endpoints:
 flat **$0.002 per call** in USDC; a JSON-RPC batch charges per element.