replaced println with log Closes #12338 (#12348)

* replaced println with log Closes #12338

* fixed println

* Apply suggestions from code review

Co-authored-by: Bastian Köcher <[email protected]>

* Update utils/frame/benchmarking-cli/src/pallet/command.rs

* Apply suggestions from code review

* ".git/.scripts/fmt.sh" 1

Co-authored-by: Shawn Tabrizi <[email protected]>
Co-authored-by: Bastian Köcher <[email protected]>
Co-authored-by: command-bot <>