Fixed typo in docs/community/3.11-announcement.md.

docs/community/3.11-announcement.md

@@ -64,7 +64,7 @@ In some circumstances a Validator class or a Default class may need to access th
 * Uniqueness validators need to be able to determine the name of the field to which they are applied, in order to run an appropriate database query.
 * The `CurrentUserDefault` needs to be able to determine the context with which the serializer was instantiated, in order to return the current user instance.
 
-Previous our approach to this was that implementations could include a `set_context` method, which would be called prior to validation. However this approach had issues with potential race conditions. We have now move this approach into a pending deprecation state. It will continue to function, but will be escalated to a deprecated state in 3.12, and removed entirely in 3.13.
+Our previous approach to this was that implementations could include a `set_context` method, which would be called prior to validation. However this approach had issues with potential race conditions. We have now move this approach into a pending deprecation state. It will continue to function, but will be escalated to a deprecated state in 3.12, and removed entirely in 3.13.
 
 Instead, validators or defaults which require the serializer context, should include a `requires_context = True` attribute on the class.