fix: update plugin description and remove readme installation instructions

[Alishahzad1903]

Pull Request Checklist

• I have read and followed the CONTRIBUTING.md guidelines.
• I have read and followed the Guidance for submissions involving paid services.
• My contribution adds a new instruction, prompt, agent, skill, or workflow file in the correct directory.
• The file follows the required naming convention.
• The content is clearly structured and follows the example format.
• I have tested my instructions, prompt, agent, skill, or workflow with GitHub Copilot.
• I have run npm start and verified that README.md is up to date.
• I am targeting the staged branch for this pull request.

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Description

I have updated the description of the contextmatic plugin and updated the readme.

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Type of Contribution

• New instruction file.
• New prompt file.
• New agent file.
• New plugin.
• New skill file.
• New agentic workflow.
• Update to existing instruction, prompt, agent, plugin, skill, or workflow.
• Other (please specify):

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Additional Notes

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By submitting this pull request, I confirm that my contribution abides by the Code of Conduct and will be licensed under the MIT License.

[Copilot]

Pull request overview

Updates the ContextMatic plugin’s marketplace-facing description and refreshes the plugin README formatting/content.

Changes:

• Updated ContextMatic description text in plugin metadata and marketplace/plugin listings.
• Reformatted multiple tables and spacing in plugins/context-matic/README.md.
• Removed the README “Installation” section/command snippet.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 4 comments.

File	Description
plugins/context-matic/README.md	Table formatting/spacing updates; installation instructions were removed.
plugins/context-matic/.github/plugin/plugin.json	Updated plugin description string used for plugin metadata.
docs/README.plugins.md	Updated ContextMatic entry description in the plugins index table.
.github/plugin/marketplace.json	Updated ContextMatic entry description in marketplace metadata.

[benskyz]

[Alishahzad1903]

A malicious user and has been reported. it doesn't reflect or represent APIMatic's submission/changes.