C++ 1.2.0 (#845)

Author: RichardSmedley

antora-playbook.yml

@@ -168,7 +168,7 @@ content:
   - url: https://github.com/couchbase/docs-sdk-c
     branches: [release/3.3]
   - url: https://github.com/couchbase/docs-sdk-cxx
-    branches: [release/1.1, release/1.0]
+    branches: [release/1.2, release/1.1, release/1.0]
 
     # .NET
   - url: https://github.com/couchbase/docs-sdk-dotnet