workflow: Update README with Go reference

[andrewwormald]

All Submissions:

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?

Checklist before requesting a review

• I have performed a self-review of my code
• I have added thorough tests, if appropriate.

New Feature Submissions:

1. Does your submission pass tests?
2. Did you install pre-commit hooks before committing?

Changes to Core Features:

• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you written new tests for your core changes, as applicable?

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud