AI: 'modelExplainability' summary and description should be modified

[VenkatTechnologist]

The summary and description of modelExplainability property states:

**Summary
Describes methods that can be used to explain the model.

Description
A free-form text that lists the different explainability mechanisms (such as SHAP, or other model specific explainability mechanisms) that can be used to explain the model.**

This should be modified to:

**Summary
Describes methods that can be used to explain the predictions of the model.

Description
A free-form text that lists the different explainability mechanisms (such as SHAP, or other model specific explainability mechanisms) that can be used to explain the predictions of the model.**