Minor fixes to CHANGELOG (opensearch-project#8179)

This fixes some minor differences with the 2.x changelog

Signed-off-by: Kartik Ganesh <gkart@amazon.com>
Signed-off-by: Rishab Nahata <rnnahata@amazon.com>

CHANGELOG.md

@@ -68,7 +68,6 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Support OpenSSL Provider with default Netty allocator ([#5460](https://github.com/opensearch-project/OpenSearch/pull/5460))
 - Replaces ZipInputStream with ZipFile to fix Zip Slip vulnerability ([#7230](https://github.com/opensearch-project/OpenSearch/pull/7230))
 - Add missing validation/parsing of SearchBackpressureMode of SearchBackpressureSettings ([#7541](https://github.com/opensearch-project/OpenSearch/pull/7541))
-- Fix mapping char_filter when mapping a hashtag ([#7591](https://github.com/opensearch-project/OpenSearch/pull/7591))
 
 ### Security
 
@@ -105,6 +104,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Bump `io.projectreactor:reactor-core` from 3.4.18 to 3.5.6 in /plugins/repository-azure ([#8016](https://github.com/opensearch-project/OpenSearch/pull/8016))
 - Bump `spock-core` from 2.1-groovy-3.0 to 2.3-groovy-3.0 ([#8122](https://github.com/opensearch-project/OpenSearch/pull/8122))
 - Bump `com.networknt:json-schema-validator` from 1.0.83 to 1.0.84 (#8141)
+- Bump `com.netflix.nebula:gradle-info-plugin` from 12.1.3 to 12.1.4 (#8139)
 - Bump `commons-io:commons-io` from 2.12.0 to 2.13.0 in /plugins/discovery-azure-classic ([#8140](https://github.com/opensearch-project/OpenSearch/pull/8140))
 
 ### Changed
@@ -126,12 +126,13 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 ### Deprecated
 
 ### Removed
-- Remove COMPRESSOR variable from CompressorFactory and use DEFLATE_COMPRESSOR instead ([7907](https://github.com/opensearch-project/OpenSearch/pull/7907))
+- Remove `COMPRESSOR` variable from `CompressorFactory` and use `DEFLATE_COMPRESSOR` instead ([7907](https://github.com/opensearch-project/OpenSearch/pull/7907))
 
 ### Fixed
--  Fixing error: adding a new/forgotten parameter to the configuration for checking the config on startup in plugins/repository-s3 #7924
+- Fixing error: adding a new/forgotten parameter to the configuration for checking the config on startup in plugins/repository-s3 #7924
 - Enforce 512 byte document ID limit in bulk updates ([#8039](https://github.com/opensearch-project/OpenSearch/pull/8039))
 - With only GlobalAggregation in request causes unnecessary wrapping with MultiCollector ([#8125](https://github.com/opensearch-project/OpenSearch/pull/8125))
+- Fix mapping char_filter when mapping a hashtag ([#7591](https://github.com/opensearch-project/OpenSearch/pull/7591))
 
 ### Security