Fix changelog bug and add entry for PR #5538

PR 5538 removed the --private option from aleth

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 ## [1.6.0] - Unreleased
 
-- Added: [#5484](https://github.com/ethereum/aleth/pull/5485) aleth-bootnode now by default connects to official Ethereum bootnodes. This can be disabled with `--no-bootstrap` flag.
+- Added: [#5485](https://github.com/ethereum/aleth/pull/5485) aleth-bootnode now by default connects to official Ethereum bootnodes. This can be disabled with `--no-bootstrap` flag.
 - Added: [#5505](https://github.com/ethereum/aleth/pull/5505) Allow building with libc++ on Linux.
 - Added: [#5514](https://github.com/ethereum/aleth/pull/5514) Improved logging in case of RPC method failures.
 - Changed: [#5464](https://github.com/ethereum/aleth/pull/5464) Upgrade OS and compilers in the docker image for tests.
@@ -14,5 +14,6 @@
 - Fixed: [#5523](https://github.com/ethereum/aleth/pull/5523) [#5533](https://github.com/ethereum/aleth/pull/5533) Fix syncing terminating prematurely because of race condition.
 - Added: [#5526](https://github.com/ethereum/aleth/pull/5526) Improved logging when loading chain config json containing syntax error.
 - Fixed: [#5539](https://github.com/ethereum/aleth/pull/5539) Fix logic for determining if dao hard fork block header should be requested
+- Added: [#5538](https://github.com/ethereum/aleth/pull/5538) Removed --private flag from aleth command-line arguments.
 
 [1.6.0]: https://github.com/ethereum/aleth/compare/v1.6.0-alpha.1...master