Update READMEs with new template for IntelPyTorch Inference/Training Optimizations

[alexsin368]

Existing Sample Changes

Description

Update READMEs according to new template: https://github.com/oneapi-src/oneAPI-samples/wiki/AI-Getting-Started-and-Features-and-Functionality-README-Template

Fixes Issue# N/A

External Dependencies

None

Type of change

Just README update

How Has This Been Tested?

Testing not needed for README update since only formatting changed.