message: Fix Cosmos SDK version in docs
diff: @@ -41,7 +41,7 @@ yarn test
  To run the entire test suite, you need to run some local blockchain to test
  against. We use [wasmd](https://github.com/CosmWasm/wasmd) for both CosmWasm
  -tests and as a generic Cosmos SDK 0.38 blockchain. We also spawn multiple
  +tests and as a generic Cosmos SDK 0.39 blockchain. We also spawn multiple
  versions of raw Tendermint and a basic WebSocket server.
  ```sh
  