message: Update README.md
  Fixes typo
diff: @@ -79,7 +79,7 @@ This code is compiled into Wasm bytecode as part of the smart contract.
  as Etherscan.
  - [serde-json-wasm](https://github.com/CosmWasm/serde-json-wasm) - A custom json
  library, forked from `serde-json-core`. This provides an interface similar to
  - `serde-json`, but without ay floating-point instructions (non-deterministic)
  + `serde-json`, but without any floating-point instructions (non-deterministic)
  and producing builds around 40% of the code size.
  **Executing contracts:**
  