CHANGELOG.md in google-cloud-datastore-2.2.1 vs CHANGELOG.md in google-cloud-datastore-2.2.2

@@ -1,6 +1,12 @@
 # Release History
 
+### 2.2.2 / 2021-09-21
+
+#### Documentation
+
+* Fix typo in Emulator guide links
+
 ### 2.2.1 / 2021-07-08
 
 #### Documentation
 
 * Update AUTHENTICATION.md in handwritten packages