[Learners] Add comments to programs used to demonstrate memory leaks

[sudiptog81]

MicroByte Title: Memory Leak

Improvement Proposal:

The Memory Leak MicroByte can be improved by adding more comments in the included programs. Read documentation and articles and come up with suggestions.

Benefits of proposed improvements:

Good documentation would enable learners who are new to C programming to understand the steps better.

[YourAKShaw]

@sudiptog81 Kindly utilize the Update MicroByte issue template to create issues that leads to any updates or improvements of a MicroByte. Kindly make the necessary changes to the description of this one.