am f4011173: am 31573d45: Merge "docs: Added link to in-app billing testing API guide and removed misleading statement. Bug: 9436754" into klp-docs

* commit 'f40111731581f03dc1b447b432331b3415fb87b9':
  docs: Added link to in-app billing testing API guide and removed misleading statement. Bug: 9436754