message: Elaborate on CHANGELOG entry
diff: @@ -16,7 +16,12 @@ and this project adheres to
  ### Changed
  -- cosmwasm-std: Remove non_exhaustive from IBC message types
  +- cosmwasm-std: Remove `non_exhaustive` from IBC types `IbcChannelOpenMsg`,
  + `IbcChannelConnectMsg` and `IbcChannelCloseMsg` in order to allow exhaustive
  + matching over the possible scenarios without an unused fallback case
  + ([#1449]).
  +
  +[#1449]: https://github.com/CosmWasm/cosmwasm/pull/1449
  ## [1.1.4] - 2022-10-03
  