Update v0.0.3 changelog (#105)

The changelog has been updated to include a reference to case-
insensitive sorting support.

Author: Gudahtt

CHANGELOG.md

@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [0.0.3]
 ### Added
 - Add `jsonSortOrder` option ([#92](https://github.com/Gudahtt/prettier-plugin-sort-json/pull/92))
+  - This also supports case-insensitive sorting ([#104](https://github.com/Gudahtt/prettier-plugin-sort-json/pull/104))
 
 ### Changed
 - **BREAKING**: Rewrite plugin to sort AST ([#100](https://github.com/Gudahtt/prettier-plugin-sort-json/pull/100))