Apply suggestions from code review

Co-authored-by: Brendan Abolivier <[email protected]>

CHANGES.md

@@ -1,16 +1,15 @@
 Synapse 1.56.0rc1 (2022-03-29)
 ==============================
 
-Synapse will now refuse to start up if open registration is enabled, in order to help reduce
-the number of homeservers that have accidentally left registration publicly accessible. These
-are increasingly used as vectors of attack for spam across the federation. If you would like
+Synapse will now refuse to start up if open registration is enabled, in order to help mitigate
+abuse across the federation. If you would like
 to provide registration to anyone, consider adding [email](https://github.com/matrix-org/synapse/blob/8a519f8abc6de772167c2cca101d22ee2052fafc/docs/sample_config.yaml#L1285),
 [recaptcha](https://matrix-org.github.io/synapse/v1.56/CAPTCHA_SETUP.html)
-or [token-based verification](https://matrix-org.github.io/synapse/v1.56/usage/administration/admin_api/registration_tokens.html)
+or [token-based](https://matrix-org.github.io/synapse/v1.56/usage/administration/admin_api/registration_tokens.html) verification
 in order to prevent automated registration from bad actors.
 
 This check can be disabled by setting the `enable_registration_without_verification` option in your
-homeserver configuration file. More details are available in the
+homeserver configuration file to `true`. More details are available in the
 [upgrade notes](https://matrix-org.github.io/synapse/v1.56/upgrade.html#open-registration-without-verification-is-now-disabled-by-default).
 
 Features