docs: update changelog to add alias

Author: Pitasi

CHANGELOG.md

@@ -55,7 +55,7 @@ Every module contains its own CHANGELOG.md. Please refer to the module you are i
 * (gRPC) [#19049](https://github.com/cosmos/cosmos-sdk/pull/19049) Add debug log prints for each gRPC request.
 * (x/consensus) [#19483](https://github.com/cosmos/cosmos-sdk/pull/19483) Add consensus messages registration to consensus module.
 * (types) [#19759](https://github.com/cosmos/cosmos-sdk/pull/19759) Align SignerExtractionAdapter in PriorityNonceMempool Remove.
-* (client) [#19870](https://github.com/cosmos/cosmos-sdk/pull/19870) Replace `event-query-tx-for` command with a new one called `wait-tx`
+* (client) [#19870](https://github.com/cosmos/cosmos-sdk/pull/19870) Add new query command `wait-tx`. Alias `event-query-tx-for` to `wait-tx` for backward compatibility.
 
 ### Improvements