pre-commit hook installation failure

Summary

The pre-commit hook installation script uses \n which are not always interpreted as new line by echo.

Steps to reproduce

Use a echo version which doesn't interpret \n in strings (may require "" instead of '').

Environment

• Version used: echo 8.30
• Operation System: Ubuntu 20.04

Possible fixes

Multiple possibilities: echo -e printf multiple echo but the first two may also not be always available.