Update SCB acronym to be synonymous with "Secure Configuration Baseline" for consistency

[ahuynhMITRE]

💡 Summary

What is the work, as a high-level summary?
Update language across all documentation to ensure that SCB is synonymous with "Secure Configuration Baseline"

Motivation and context

This would be useful because we reference the SCBs are both "Secure Configuration Baseline" and "Security Configuration Baselines" in multiple artifacts. This will make the documentation consistent with "Secure Configuration Baseline".

Implementation notes

Remove and update all instances that note Security Configuration Baseline with Secure Configuration Baseline.

Acceptance criteria

How do we know when this work is done?

• All instances of Security Configuration Baseline are replaced with Secure Configuration Baseline.