add changelog

hellertang · hellertang · commit 4151e5ad5b4e · 2023-04-21T15:45:30.000+08:00
diff --git a/.changelog/1686.txt b/.changelog/1686.txt
@@ -0,0 +1,3 @@
+```release-note:enhancement
+resource/tencentcloud_ckafka_topic: support update `replica_num`
+```

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,3 @@`
	`1`	+```release-note:enhancement
	`2`	+resource/tencentcloud_ckafka_topic: support update `replica_num`
	`3`	+```