[chore] update hint for running make command

[trisch-me]

Adds a hint for users using mac
Default behaviour of sed mac is different from the gnu sed

Merge requirement checklist

• CONTRIBUTING.md guidelines followed.
• Change log entry added, according to the guidelines in When to add a changelog entry.
  • If your PR does not need a change log, start the PR title with [chore]
• schema-next.yaml updated with changes to existing conventions.