chore: fix problematic const name and some typos in comment

[mountcount]

Description of change

fix problematic const name and some typos in comment

Links to any relevant issues

Type of change

• Documentation Fix

How the change has been tested

No need.

Change checklist

Tick the boxes that are relevant to your changes, and delete any items that are not.

• I have followed the contribution guidelines for this project
• I have performed a self-review of my own code
• I have selected the develop branch as the target branch
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• I have checked that new and existing unit tests pass locally with my changes