Migrate dockka to use ktfmt

BUG: 319663977

TESTED: Ran ./gradlew :ktCheck and it failed when the files weren't formatted

Ran ./gradlew :ktFormat and the files got formatted

Ran ./gradlew :ktCheck again and it passed as all files were formatted

Change-Id: I6fa3db0d8def4ac0bcc127d00050f7a7ef548f5a
177 files changed