Helm: update release notes (#7850)

From suggestions on #7818

Signed-off-by: György Krajcsovits <[email protected]>

docs/sources/helm-charts/mimir-distributed/release-notes/v5.3.md

@@ -9,17 +9,17 @@ weight: 300
 
 Grafana Labs is excited to announce version 5.3 of the Grafana Mimir Helm chart, which is compatible with Grafana Mimir v2.12 or Grafana Enterprise Metrics (GEM) v2.12. The `mimir-distributed` Helm chart is the best way to install Mimir on Kubernetes.
 
-The highlights that follow include the top features, enhancements, and bugfixes in this release. For a comprehensive list of changes, see the [Helm chart changelog](https://github.com/grafana/mimir/tree/main/operations/helm/charts/mimir-distributed/CHANGELOG.md).
+The highlights that follow include the top features, enhancements, and bug fixes in this release. For a comprehensive list of changes, see the [Helm chart changelog](https://github.com/grafana/mimir/tree/main/operations/helm/charts/mimir-distributed/CHANGELOG.md).
 
 ## Important changes
 
 A number of timeout settings have been improved upon:
 
-- Relaxed the hash ring heartbeat period and timeout for distributor, ingester, store-gateway and compactor. This means a reduced load in intra component communication with the tradeoff that abrupt component failures will take longer to detect. The new values are taken from Grafana Cloud Metrics operations.
-- The timeout for writing recording rule results has been increased to 10 seconds to accommodate large result sets.
-- The distributor termination grace period was increased from `60s` to `100s` to give more time for a clean termination.
-- The read timeout for chunks and index caches using memcached has been increased to from `450ms` to `750ms`.
-- For the distributor and query-frontend components the GRPC maximum connection age and the component shutdown delay has been tuned to avoid invoking components that are shutting down.
+- Relaxed the hash ring heartbeat period and timeout for the distributor, ingester, store-gateway and compactor. This reduces load in intra component communication with the tradeoff that abrupt component failures take longer to detect. The new values are taken from Grafana Cloud Metrics operations.
+- Increased the timeout for writing recording rule results to `10s` to accommodate large result sets.
+- Increased the distributor termination grace period from `60s` to `100s` to give more time for a clean termination.
+- Increased the read timeout for chunks and index caches using memcached from `450ms` to `750ms`.
+- Tuned the GRPC maximum connection age and shutdown delay for the distributor and query-frontend components to avoid invoking components that are shutting down.
 
 ## Features and enhancements