docs: fix twin block milestone - v36-signalling nodes with v35 shares, not native v36 node

Author: frstrtr

README.md

@@ -11,7 +11,7 @@ Original forum thread: <https://bitcointalk.org/index.php?topic=18313>
 >
 > **First daemonless DOGE block:** (2026-03-27) — DOGE block accepted on testnet4alpha via embedded SPV P2P, no dogecoind RPC needed
 >
-> **First V36 Twin Block:** LTC [#3085349](https://blockchair.com/litecoin/block/3085349) + DOGE [#6154761](https://blockchair.com/dogecoin/block/6154761) (2026-04-05) — simultaneous LTC+DOGE block found on the V36 share chain, detected and displayed by c2pool's embedded block scanner
+> **First V36 Twin Block:** LTC [#3085349](https://blockchair.com/litecoin/block/3085349) + DOGE [#6154761](https://blockchair.com/dogecoin/block/6154761) (2026-04-05) — simultaneous LTC+DOGE block found by v36-signalling nodes running p2pool v36 producing V35 shares with `desired_version=36`; detected and displayed by c2pool's embedded block scanner
 
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