CHANGELOG.md in google-cloud-bigtable-1.2.1 vs CHANGELOG.md in google-cloud-bigtable-1.2.2

@@ -1,6 +1,12 @@
 # Release History
 
+### 1.2.2 / 2020-05-28
+
+#### Documentation
+
+* Fix a few broken links
+
 ### 1.2.1 / 2020-05-21
 
 #### Bug Fixes
 
 * Disable streaming RPC retries in lower-level client