release: v0.21.0-rc1 changelog (#1606)

* changelog: added rc-1 changelog entry

* fix: typo fix rc1

Author: Vvaradinov

CHANGELOG.md

@@ -36,31 +36,25 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 # Changelog
 
-## Unreleased
+## [v0.21.0-rc1] - 2022-1-13
 
 ### State Machine Breaking
 
 * (feemarket) [#1509](https://github.com/evmos/ethermint/pull/1509) Deprecate usage of x/params in x/feemarket
 * (evm) [#1472](https://github.com/evmos/ethermint/pull/1472) Deprecate x/params usage in x/evm
-* (deps) #[1575](https://github.com/evmos/ethermint/pull/1575) bump ibc-go to [`v6.1.0`]
-* (deps) [#1361](https://github.com/evmos/ethermint/pull/1361) Bump ibc-go to [`v5.1.0`]
+* (deps) [#1575](https://github.com/evmos/ethermint/pull/1575) bump ibc-go to [`v6.1.0`]
 * (deps) [#1168](https://github.com/evmos/ethermint/pull/1168) Upgrade Cosmos SDK to [`v0.46.6`]
 
-### API Breaking
-
-### Features
-
 ### Improvements
 
-* (evm)[#1582](https://github.com/evmos/ethermint/pull/1582) cleanup `evm` files
+* (evm) [#1582](https://github.com/evmos/ethermint/pull/1582) cleanup `evm` files
 * (evm) [#1544](https://github.com/evmos/ethermint/pull/1544) Migrate deprecated event emitting to new TypedEvent
 * (deps) [#1532](https://github.com/evmos/ethermint/pull/1532) Upgrade Go-Ethereum version to [`v1.10.26`](https://github.com/ethereum/go-ethereum/releases/tag/v1.10.26).
 
 ### Bug Fixes
 * (rpc) [#1600](https://github.com/evmos/ethermint/pull/1600) Revert changes from `TypedEvents`
 * (proto) [#1586](https://github.com/evmos/ethermint/pull/1586) Avoid duplicate register proto type in `evm` & `feemarket`
 
-
 ## [v0.20.0] - 2022-12-28
 
 ### State Machine Breaking