add changelog entry

Author: cbaker6

CHANGELOG.md

@@ -96,6 +96,7 @@ ___
 - Remove support for MongoDB 3.6 which has reached its End-of-Life date and PostgreSQL 10 (Manuel Trezza) [#7315](https://github.com/parse-community/parse-server/pull/7315)
 - Remove support for Node 10 which has reached its End-of-Life date (Manuel Trezza) [#7314](https://github.com/parse-community/parse-server/pull/7314)
 - Remove S3 Files Adapter from Parse Server, instead install separately as `@parse/s3-files-adapter` (Manuel Trezza) [#7324](https://github.com/parse-community/parse-server/pull/7324)
+- Fix explain for mongoDB which was returning a single object for query results instead of an array of objects. This conflicts with the rest of the find query server responses as find is always suppose to return an array (Corey Baker) [#7440](https://github.com/parse-community/parse-server/pull/7440)
 ### Notable Changes
 - Added Parse Server Security Check to report weak security settings (Manuel Trezza, dblythy) [#7247](https://github.com/parse-community/parse-server/issues/7247)
 - EXPERIMENTAL: Added new page router with placeholder rendering and localization of custom and feature pages such as password reset and email verification (Manuel Trezza) [#7128](https://github.com/parse-community/parse-server/pull/7128)