Updated comment styles for easier reaading and scanning

Updated comment styles for readability and scanability.

```
// -------------------------------------------------------------------------------------
// Long comments
//   - Sub point 1
//   - Sub point 2
// -------------------------------------------------------------------------------------

// Short comment
```
to
```
/*============================================================================
  Long comment
    - Sub point 1
    - Sub point 2
==============================================================================*/

/*================ Short comment ================*/
```