[DX-1409] Fix virtual endpoints Javascript request object documentation

[dcs3spp]

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DX-1409

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Description

Document virtual endpoint request object properties.

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Checklist

• [x] I have added a preview link to the PR description.
• [x] I have reviewed the suggestions made by our AI (PR Agent) and updated them accordingly (spelling errors, rephrasing, etc.)
• [x] I have reviewed the guidelines for contributing to this repository.
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• [x] Make sure you have started your change off our latest master.
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PR Type

Documentation

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Description

• Added detailed documentation for the request object properties specific to virtual endpoint functions.
• Included a note highlighting the limited set of properties available in the request object for virtual endpoints.
• Provided a JSON example to illustrate the structure of the Params property.

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Changes walkthrough 📝

Relevant files

Documentation

middleware-scripting-guide.md Document virtual endpoint functions' request object properties tyk-docs/content/plugins/supported-languages/javascript-middleware/middleware-scripting-guide.md Added documentation for virtual endpoint functions' request object properties. Included a note specifying the properties available in the request object for virtual endpoint functions. Provided an example of the Params property structure in JSON format. +23/-0

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