fix: example and reference fixes for extensions

[arminhammer]

Please specify parts of this PR update:

• Specification
• Schema
• Examples
• Extensions
• Use Cases
• Community
• CTK
• Other

Discussion or Issue link:

#1135

What this PR does:

This PR proposes some fixes to the extension example in dsl.md, as well as the extension reference section in dsl-reference.md. These fixes are designed to align the spec with the discrepancies addressed in #1135.

Additional information:

[Copilot]

Pull request overview

This PR fixes the extension examples and reference documentation to correctly represent extensions as an array rather than a map, addressing discrepancies identified in issue #1135.

• Changed extensions from map[string, extension] to extension[] in the reference documentation
• Updated the extension example in dsl.md to use array syntax
• Corrected the before and after property types from map[string, task] to task[] in the extension reference

Reviewed changes

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

File	Description
dsl.md	Updated the extension example to use array syntax (with list item prefix -) instead of map syntax
dsl-reference.md	Updated the extensions type from map[string, extension] to extension[] and corrected before/after properties from map[string, task] to task[]

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[ricardozanini]

Looks like Copilot is useful. :)

@arminhammer can you take a look at the Copilot suggestions? The property indeed is named endpoint.

[arminhammer]

Looks like Copilot is useful. :)

@arminhammer can you take a look at the Copilot suggestions? The property indeed is named endpoint.

Interesting! My change was ultimately a formatting change, but it caused Copilot to take another look and spot the latent error. Useful indeed.

In any case, I fixed the issue and changed uri to endpoint, to align with the spec.

[cdavernas]

LGTM! Cheers ❤️