update changelog date (Azure#16021)

kristapratico · rakshith91 · commit 4e37050d12c6 · 2021-01-07T17:39:59.000-08:00
diff --git a/sdk/formrecognizer/azure-ai-formrecognizer/CHANGELOG.md b/sdk/formrecognizer/azure-ai-formrecognizer/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Release History
 
-## 3.1.0b2 (Unreleased)
+## 3.1.0b2 (2021-01-12)
 
 **Bug Fixes**
 
