Add information on Changelogs.

[HarshKapadia2]

• Section: Contributor Friendly Repository
• Learn about Changelogs and add that information in your own words in changelog.adoc in the https://github.com/HarshKapadia2/git_basics/tree/main/src/content/contributor_friendly_repo directory.
  • Make sure to add a reference to the file in the https://github.com/HarshKapadia2/git_basics/blob/main/src/refs/contributor_friendly_repo.adoc file.
• Make sure to read the https://github.com/HarshKapadia2/git_basics/blob/main/CONTRIBUTING.md file fore more instructions.
• Feel free to reference any resources to add information. It would be better to reference multiple resources.
  • Eg: Keep a Changelog
• Write about a changelog is, the need for a changelog, the format of a changelog, when to update a changelog, etc.