Add to the 'Terms' section.

[HarshKapadia2]

• [ ] Improve the '.gitignore file' sub-section.
  • [ ] Add a code block to the 'Syntax' section instead of points.
    • Add the missing syntax from https://riptutorial.com/git/example/885/ignoring-files-and-directories-with-a--gitignore-file
  • [ ] Shift the 'Ignore files locally without modifying .gitignore' section to the 'General # 2' section. (TBD)