Markdown link check parameters

[YanxuanLiu]

based on #48

Support all parameters of https://github.com/tcort/github-action-markdown-link-check?tab=readme-ov-file#custom-variables for shared action.

Test log: https://github.com/YanxuanLiu/spark-rapids-common/actions/runs/17061831171/job/48370058150?pr=5#step:4:9

[Copilot]

Pull Request Overview

Enhances the markdown link check GitHub action by adding support for all available parameters from the underlying tcort/github-action-markdown-link-check action. This change makes the shared action more flexible and configurable for different use cases.

• Adds comprehensive input parameters for markdown link checking configuration
• Replaces hardcoded values with configurable inputs and appropriate defaults
• Updates the workflow to demonstrate usage of the new input parameters

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
markdown-link-check/action.yml	Adds input parameters and replaces hardcoded values with configurable inputs
.github/workflows/markdown-link-check.yml	Demonstrates usage of new input parameters

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[Copilot]

The base-branch parameter was previously hardcoded to 'gh-pages' but now has no default value. Consider adding a default value or documenting the expected behavior when this parameter is not provided.

Suggested change

	required: false
	required: false
	default: 'gh-pages'