* Refresh unzip page:
- more general descrptions
- more general examples
* Mention `zip` command
* Don't use brace expansion
* Update pages/common/unzip.md
* Use `list` term in the last example
* Apply suggestions from code review
* Fix command description
* Apply suggestions from code review
* Applying the snake_case convention throughout the repo
- Also removing the file extension where not needed
- Adding {{ }} on a few old pages
* Addressing concerns
- Added {{ }} where they were missed out
- Removed spaces inside {{ }}
- Reverting "file" to "filename" to make it clearer
* Fixing the comments on nc page