message: Update ElectrsCash build instruction to take into account binary rename
diff: @@ -31,7 +31,7 @@ sudo apt install python3-git cargo clang
  The latest stable release used by the node software can be compiled from the Bitcoin Unlimited source tree by running
  ```sh
  -make electrs
  +make electrscash
  ```
  For more recent development versions, see the [usage document](https://github.com/BitcoinUnlimited/ElectrsCash/blob/master/doc/usage.md).
  