changelog: prepare v2.2.1 release (#652)

CHANGELOG.md

@@ -1,5 +1,10 @@
 # Changelog
 
+## v2.2.1 - 23 Aug 2023
+
+#### Bugfixes
+- Fixed incorrect `s5cmd version` output ([#650](https://github.com/peak/s5cmd/pull/650))
+
 ## v2.2.0 - 21 Aug 2023
 
 #### Features
@@ -54,7 +59,6 @@
  reduces RAM usage from ~10 GB to ~1.5 GB for `sync` operation of a directory containing
  1,000,000 files at a cost of speed (20% slower for 1,000,000 objects). For smaller
  directories (~50,000 files) there is no significant change in speed. ([#483](https://github.com/peak/s5cmd/pull/483))
-
 - Improve auto-completion support of s5cmd for `zsh` and `bash`, start supporting `pwsh` and stop the support for `fish`. Now s5cmd can complete bucket names, s3 keys in a bucket and the local files. However, `install-completion` flag no longer _installs_ the completion script to `*rc` files instead it merely gives instructions to install autocompletion and provides the autocompletion script ([#500](https://github.com/peak/s5cmd/pull/500)).
 
 #### Bugfixes