Move section of PR rubocop#5720 written in CHANGELOG.md

I intended to wrote rubocop#5720 in "Bug fixes" section, but it probably
moved to an unintended "Changes" section at the timing of rebasing.

CHANGELOG.md

@@ -9,13 +9,13 @@
 * [#5561](https://github.com/bbatsov/rubocop/issues/5561): Fix `Lint/ShadowedArgument` false positive with shorthand assignments. ([@akhramov][])
 * [#4298](https://github.com/bbatsov/rubocop/issues/4298): Fix auto-correction of `Performance/RegexpMatch` to produce code that safe guards against the receiver being `nil`. ([@rrosenblum][])
 * [#5738](https://github.com/bbatsov/rubocop/issues/5738): Make `Rails/HttpStatus` ignoring hash order to fix false negative. ([@pocke][])
+* [#5720](https://github.com/bbatsov/rubocop/pull/5720): Fix false positive for `Style/EmptyLineAfterGuardClause` when guard clause is after heredoc. ([@koic][])
 * [#5760](https://github.com/bbatsov/rubocop/pull/5760): Fix incorrect offense location for `Style/EmptyLineAfterGuardClause` when guard clause is after heredoc argument. ([@koic][])
 
 ### Changes
 
 * [#5752](https://github.com/bbatsov/rubocop/pull/5752): Add `String#delete_{prefix,suffix}` to Lint/Void cop. ([@bdewater][])
 * [#5734](https://github.com/bbatsov/rubocop/pull/5734): Add `by`, `on`, `in` and `at` to allowed names of `Naming/UncommunicativeMethodParamName` cop in default config. ([@AlexWayfer][])
-* [#5720](https://github.com/bbatsov/rubocop/pull/5720): Fix false positive for `Style/EmptyLineAfterGuardClause` when guard clause is after heredoc. ([@koic][])
 
 ## 0.54.0 (2018-03-21)