grafana: Update grafana datasources

[mauriciovasquezbernal]

Align datasources with docs in https://grafana.com/docs/grafana/latest/datasources/ and the ones I can see in my Managed Grafana workspace:

[prmerger-automator]

@mauriciovasquezbernal : Thanks for your contribution! The author(s) and reviewer(s) have been notified to review your proposed change.

[learn-build-service-prod]

Learn Build status updates of commit 32a2c81:

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[v-dirichards]

Hi @mauriciovasquezbernal - This pull request was opened in the public repo. PMs should work in the private repo, per the Microsoft Docs contributor guide. We can keep this PR open for review and merge, but would you make future content updates in the private repo? Thank you!

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@maud-lv

Can you review the proposed changes?

Important: When the changes are ready for publication, adding a #sign-off comment is the best way to signal that the PR is ready for the review team to merge.

#label:"aq-pr-triaged"
@MicrosoftDocs/public-repo-pr-review-team

[Copilot]

Pull request overview

This PR updates the Grafana datasources table to align with the latest official documentation and the datasources available in Azure Managed Grafana workspaces. The changes add three new datasources (Parca and Pyroscope) and remove a duplicate Loki entry to match the current state of supported plugins.

• Added Parca and Pyroscope datasources to the supported list
• Removed duplicate Loki entry that appeared twice in the table

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[Copilot]

Loki datasource appears twice in the table (lines 40 and 43). The duplicate entry on line 43 should be removed to maintain accurate documentation.

Suggested change

| [Loki](https://grafana.com/docs/grafana/latest/datasources/loki/) | - | ✔ |