docs: clean changelog for v3.1.0 (#1138)

Update CHANGELOG.md

CHANGELOG.md

@@ -4,16 +4,15 @@
 
 Add an entry to the unreleased section whenever merging a PR to main that is not targeted at a specific release. These entries will eventually be included in a release.
 
-* (fix) [#720](https://github.com/cosmos/interchain-security/issues/720) Fix the attribute `AttributeDistributionTotal` value in `FeeDistribution` event emit.
-* (deps) [#1119](https://github.com/cosmos/interchain-security/pull/1119) bump cometbft from `v0.37.1` to `0.37.2`.
-
 ## v3.1.0
 
 Date July 11th, 2023
 
-A minor upgrade to v3.0.0, which removes the panic in the consumer ccv module which would occur in an emergency scenario where the ccv channel is closed.
+A minor upgrade to v3.0.0, which removes the panic in the consumer ccv module which would occur in an emergency scenario where the ccv channel is closed. This release also fixes how a distribution related event is emitted, and bumps cometbft.
 
 * (feat) [#1127](https://github.com/cosmos/interchain-security/pull/1127) Remove consumer panic when ccv channel is closed
+* (fix) [#720](https://github.com/cosmos/interchain-security/issues/720) Fix the attribute `AttributeDistributionTotal` value in `FeeDistribution` event emit.
+* (deps) [#1119](https://github.com/cosmos/interchain-security/pull/1119) bump cometbft from `v0.37.1` to `0.37.2`.
 
 ## v3.0.0