Update readme

[unixorn]

License Acceptance

• This repository is Apache version 2.0 licensed (some scripts may have alternate licensing inline in their code) and by making this PR, I am contributing my changes to the repository under the terms of the Apache 2 license.

Description

Clarify .zshrc.*.d usage.

Type of changes

• A helper script
• A link to an external resource like a blog post or video
• Text cleanups/updates
• Test updates
• Bug fix
• New feature
• Plugin list change

Checklist

• I have read the CONTRIBUTING document.
• I have updated the readme if this PR changes/updates quickstart functionality.
• All new and existing tests pass.
• Any scripts added use #!/usr/bin/env interpreter instead of potentially platform-specific direct paths (#!/bin/sh is an allowed exception)
• Scripts are marked executable
• Scripts do not have a language file extension unless they are meant to be sourced and not run standalone. No one should have to know if a script was written in bash, python, ruby or whatever. Not including file extensions makes it easier to rewrite the script in another language later without having to change every reference to the previous version.
• I have added a credit line to README.md for the script
• If there was no author credit in a script added in this PR, I have added one.
• I have confirmed that the link(s) in my PR are valid.

[codeclimate]

Code Climate has analyzed commit 9145ab9 and detected 0 issues on this pull request.

View more on Code Climate.

[github-actions]

🦙 MegaLinter status: ❌ ERROR

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
❌ ACTION	actionlint	1		1	0.01s
✅ COPYPASTE	jscpd	yes		no	1.2s
⚠️ MARKDOWN	markdownlint	1		4	1.59s
✅ MARKDOWN	markdown-table-formatter	1		0	0.31s
⚠️ REPOSITORY	checkov	yes		2	11.45s
✅ REPOSITORY	devskim	yes		no	1.75s
✅ REPOSITORY	dustilock	yes		no	0.03s
✅ REPOSITORY	gitleaks	yes		no	0.47s
✅ REPOSITORY	git_diff	yes		no	0.01s
✅ REPOSITORY	grype	yes		no	14.82s
⚠️ REPOSITORY	kics	yes		1	26.09s
✅ REPOSITORY	syft	yes		no	0.27s
✅ REPOSITORY	trivy	yes		no	5.2s
✅ REPOSITORY	trivy-sbom	yes		no	1.76s
✅ REPOSITORY	trufflehog	yes		no	5.36s
✅ SPELL	lychee	2		0	1.53s
✅ YAML	prettier	1		0	0.55s
✅ YAML	v8r	1		0	2.35s
✅ YAML	yamllint	1		0	0.33s

See detailed report in MegaLinter reports
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