fix: reword the deprecation announcement

Author: Shubham Chaturvedi

CHANGELOG.rst

@@ -8,10 +8,7 @@ Changelog
 Deprecation
 -----------
 The AWS DynamoDB Encryption Client for Python no longer supports Python 3.6
-as of version 3.2; only Python 3.7+ is supported. Customers using
-Python 3.6 can still use the 2.x line of the AWS DynamoDB Encryption Client for Python,
-which will continue to receive security updates, in accordance
-with our `Support Policy <https://github.com/aws/aws-dynamodb-encryption-python/blob/master/SUPPORT_POLICY.rst>`__.
+as of version 3.2; only Python 3.7+ is supported.
 
 Feature
 -----------