Put CHANGELOG entries in correct sections. [ci skip]

Author: dblock

CHANGELOG.md

@@ -6,7 +6,7 @@
 
 #### Fixes
 
-* [#2083](https://github.com/ruby-grape/grape/pull/2083): Set Cache-Control only for streamed responses - [@stanhu](https://github.com/stanhu).
+* [#2083](https://github.com/ruby-grape/grape/pull/2083): Set `Cache-Control` header only for streamed responses - [@stanhu](https://github.com/stanhu).
 
 ### 1.4.0 (2020/07/10)
 
@@ -16,14 +16,14 @@
 * [#2060](https://github.com/ruby-grape/grape/pull/2060): Drop support for Ruby 2.4 - [@dblock](https://github.com/dblock).
 * [#2060](https://github.com/ruby-grape/grape/pull/2060): Upgraded Rubocop to 0.84.0 - [@dblock](https://github.com/dblock).
 * [#2077](https://github.com/ruby-grape/grape/pull/2077): Simplify logic for defining declared params - [@dnesteryuk](https://github.com/dnesteryuk).
-* [#2084](https://github.com/ruby-grape/grape/pull/2084): Fix memory leak in path normalization - [@fcheung](https://github.com/fcheung).
+* [#2076](https://github.com/ruby-grape/grape/pull/2076): Make route information available for hooks when the automatically generated endpoints are invoked - [@anakinj](https://github.com/anakinj).
 
 #### Fixes
 
-* [#2067](https://github.com/ruby-grape/grape/pull/2067): Coerce empty string to nil for all primitive types except String - [@petekinnecom](https://github.com/petekinnecom).
+* [#2067](https://github.com/ruby-grape/grape/pull/2067): Coerce empty String to `nil` for all primitive types except `String` - [@petekinnecom](https://github.com/petekinnecom).
 * [#2064](https://github.com/ruby-grape/grape/pull/2064): Fix Ruby 2.7 deprecation warning in `Grape::Middleware::Base#initialize` - [@skarger](https://github.com/skarger).
 * [#2072](https://github.com/ruby-grape/grape/pull/2072): Fix `Grape.eager_load!` and `compile!` - [@stanhu](https://github.com/stanhu).
-* [#2076](https://github.com/ruby-grape/grape/pull/2076): Make route information available for hooks when the automatically generated endpoints are invoked - [@anakinj](https://github.com/anakinj).
+* [#2084](https://github.com/ruby-grape/grape/pull/2084): Fix memory leak in path normalization - [@fcheung](https://github.com/fcheung).
 
 ### 1.3.3 (2020/05/23)