Remove trailing newline from yaml file outputs

[B13rg]

Also adds changelog to docs site

[Copilot]

Pull request overview

This PR removes the trailing newline and document separator from YAML file outputs, bumps the version to 0.2.3, and integrates the changelog into the documentation site.

• Modified YAML output formatting to place document separators between objects rather than after each object
• Added changelog to the documentation site navigation and copied it to the docs directory
• Updated version from v0.2.2 to v0.2.3

Reviewed changes

Copilot reviewed 44 out of 45 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
pkg/generate/file_processing.go	Modified to place YAML document separators between objects instead of after each, eliminating trailing separator
main.go	Version bump from v0.2.2 to v0.2.3
CHANGELOG.md	Added entry for version 0.2.3
mkdocs.yml	Added changelog link to navigation
docs/index.md	Added changelog reference to documentation links
docs/docs.go	Added code to copy CHANGELOG.md to docs directory
docs/CHANGELOG.md	New file containing full changelog
docs/godoc/kr8-generate.md	Updated line reference for ProcessTemplate function
_site/*	Generated site files reflecting changelog addition

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