markdown lint

[danmoseley]

Description

Fix these issues, and pin markdownlint so new rules don't appear out of the blue again.

dan@danmose50:/mnt/c/git/aspire$ markdownlint --ignore '.dotnet/' --ignore '**/AnalyzerReleases.*.md' '**/*.md'
README.md:20:252 MD059/descriptive-link-text Link text should be descriptive [Context: "[here]"]
README.md:20:314 MD059/descriptive-link-text Link text should be descriptive [Context: "[here]"]
src/Aspire.Dashboard/README.md:133:85 MD059/descriptive-link-text Link text should be descriptive [Context: "[here]"]
src/Components/Aspire_Components_Progress.md:53:551 MD059/descriptive-link-text Link text should be descriptive [Context: "[here]"]
src/Components/Aspire_Components_Progress.md:65:172 MD059/descriptive-link-text Link text should be descriptive [Context: "[here]"]

Checklist

• Is this feature complete?
  • Yes. Ready to ship.
  • No. Follow-up changes expected.
• Are you including unit tests for the changes and scenario tests if relevant?
  • Yes
  • No
• Did you add public API?
  • Yes
    • If yes, did you have an API Review for it?
      • Yes
      • No
    • Did you add <remarks /> and <code /> elements on your triple slash comments?
      • Yes
      • No
  • No
• Does the change make any security assumptions or guarantees?
  • Yes
    • If yes, have you done a threat model and had a security review?
      • Yes
      • No
  • No
• Does the change require an update in our Aspire docs?
  • Yes
    • Link to aspire-docs issue (consider using one of the following templates):
      • New (or update) doc-idea template
      • New breaking-change template
      • New diagnostic template
  • No

[Copilot]

Pull Request Overview

This PR addresses markdown lint issues by updating link texts to be more descriptive and pins the markdownlint-cli version to 0.45.0 so that future rule changes do not unexpectedly affect builds.

• Updated descriptive link texts in several markdown files (README.md, Aspire.Dashboard/README.md, and Aspire_Components_Progress.md) to resolve MD059 errors.
• Pinned markdownlint-cli to a specific version in the GitHub Actions workflow.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
src/Components/Aspire_Components_Progress.md	Revised link text to provide a clear reference to a README example.
src/Aspire.Dashboard/README.md	Updated telemetry documentation link text to be more descriptive.
README.md	Improved labelling of sample references with more descriptive link texts.
.github/workflows/markdownlint.yml	Explicitly set markdownlint-cli version to 0.45.0 to pin linting behavior.