docs: update changelog

Signed-off-by: Sherlock Holo <[email protected]>

Author: Sherlock-Holo

CHANGELOG.md

@@ -3,7 +3,9 @@
 ENHANCEMENTS:
 
 * Data Source: `tencentcloud_as_scaling_groups` add optional argument `tags` and attribute `tags` for `scaling_group_list`.
+* Data Source: `tencentcloud_gaap_http_domains` set response `certificate_id`, `client_certificate_id`, `realserver_auth`, `basic_auth` and `gaap_auth` default value when they are nil.
 * Resource: `tencentcloud_as_scaling_group` add optional argument `tags`.
+* Resource: `tencentcloud_gaap_http_domain` set response `certificate_id`, `client_certificate_id`, `realserver_auth`, `basic_auth` and `gaap_auth` default value when they are nil.
 
 ## 1.20.0 (September 24, 2019)