Update the CHANGES document.

Author: clokep

CHANGES.md

@@ -10,7 +10,7 @@ Removal warning
 
 The v1 list accounts API is deprecated and will be removed in a future release.
 This API was undocumented and misleading. It can be replaced by the
-[v2 list accounts API](https://github.com/matrix-org/synapse/blob/master/docs/admin_api/user_admin_api.rst#list-accounts),
+[v2 list accounts API](https://github.com/matrix-org/synapse/blob/release-v1.28.0/docs/admin_api/user_admin_api.rst#list-accounts),
 which has been available since Synapse 1.7.0 (2019-12-13).
 
 Please check if you're using any scripts which use the admin API and replace
@@ -20,26 +20,26 @@ Please check if you're using any scripts which use the admin API and replace
 Features
 --------
 
-- New API /_synapse/admin/rooms/{roomId}/context/{eventId}. ([\#9150](https://github.com/matrix-org/synapse/issues/9150))
+- New admin API to get the context of an event: `/_synapse/admin/rooms/{roomId}/context/{eventId}`. ([\#9150](https://github.com/matrix-org/synapse/issues/9150))
 - Further improvements to the user experience of registration via single sign-on. ([\#9300](https://github.com/matrix-org/synapse/issues/9300), [\#9301](https://github.com/matrix-org/synapse/issues/9301))
 - Add hook to spam checker modules that allow checking file uploads and remote downloads. ([\#9311](https://github.com/matrix-org/synapse/issues/9311))
 - Add support for receiving OpenID Connect authentication responses via form `POST`s rather than `GET`s. ([\#9376](https://github.com/matrix-org/synapse/issues/9376))
-- Add the shadow-banning status to the display user admin API. ([\#9400](https://github.com/matrix-org/synapse/issues/9400))
+- Add the shadow-banning status to the admin API for user info. ([\#9400](https://github.com/matrix-org/synapse/issues/9400))
 
 
 Bugfixes
 --------
 
-- Fix long-standing bug where sending email push would fail for rooms that the server had since left. ([\#9257](https://github.com/matrix-org/synapse/issues/9257))
+- Fix long-standing bug where sending email notifications would fail for rooms that the server had since left. ([\#9257](https://github.com/matrix-org/synapse/issues/9257))
 - Fix bug in Synapse 1.27.0rc1 which meant the "session expired" error page during SSO registration was badly formatted. ([\#9296](https://github.com/matrix-org/synapse/issues/9296))
 - Assert a maximum length for some parameters for spec compliance. ([\#9321](https://github.com/matrix-org/synapse/issues/9321), [\#9393](https://github.com/matrix-org/synapse/issues/9393))
 - Fix additional errors when previewing URLs: "AttributeError 'NoneType' object has no attribute 'xpath'" and "ValueError: Unicode strings with encoding declaration are not supported. Please use bytes input or XML fragments without declaration.". ([\#9333](https://github.com/matrix-org/synapse/issues/9333))
 - Fix a bug causing Synapse to impose the wrong type constraints on fields when processing responses from appservices to `/_matrix/app/v1/thirdparty/user/{protocol}`. ([\#9361](https://github.com/matrix-org/synapse/issues/9361))
-- Fix bug where Synapse would occaisonally stop reconnecting after the connection was lost. ([\#9391](https://github.com/matrix-org/synapse/issues/9391))
+- Fix bug where Synapse would occasionally stop reconnecting to Redis after the connection was lost. ([\#9391](https://github.com/matrix-org/synapse/issues/9391))
 - Fix a long-standing bug when upgrading a room: "TypeError: '>' not supported between instances of 'NoneType' and 'int'". ([\#9395](https://github.com/matrix-org/synapse/issues/9395))
 - Reduce the amount of memory used when generating the URL preview of a file that is larger than the `max_spider_size`. ([\#9421](https://github.com/matrix-org/synapse/issues/9421))
 - Fix a long-standing bug in the deduplication of old presence, resulting in no deduplication. ([\#9425](https://github.com/matrix-org/synapse/issues/9425))
-- The `ui_auth.session_timeout` configuration setting can now be specified in terms of number of seconds/minutes/etc/. Contributed by Rishabh Arya. ([\#9426](https://github.com/matrix-org/synapse/issues/9426))
+- The `ui_auth.session_timeout` config option can now be specified in terms of number of seconds/minutes/etc/. Contributed by Rishabh Arya. ([\#9426](https://github.com/matrix-org/synapse/issues/9426))
 - Fix a bug introduced in v1.27.0: "TypeError: int() argument must be a string, a bytes-like object or a number, not 'NoneType." related to the user directory. ([\#9428](https://github.com/matrix-org/synapse/issues/9428))
 
 
@@ -52,7 +52,7 @@ Updates to the Docker image
 Improved Documentation
 ----------------------
 
-- Reorganizing CHANGELOG.md. ([\#9281](https://github.com/matrix-org/synapse/issues/9281))
+- Reorganize CHANGELOG.md. ([\#9281](https://github.com/matrix-org/synapse/issues/9281))
 - Add note to `auto_join_rooms` config option explaining existing rooms must be publicly joinable. ([\#9291](https://github.com/matrix-org/synapse/issues/9291))
 - Correct name of Synapse's service file in TURN howto. ([\#9308](https://github.com/matrix-org/synapse/issues/9308))
 - Fix the braces in the `oidc_providers` section of the sample config. ([\#9317](https://github.com/matrix-org/synapse/issues/9317))