Clarifies that path params exist on query object

[byjoshuadavis]

Clarifies that the query object contains query and dynamic path parameters. As I was helping another engineer, I tried to reference this documention. I thought the routing page would be a more useful reference if it indicated how to read path parameters.

Bug

• Related issues linked using fixes #number
• Integration tests added
• Errors have helpful link attached, see contributing.md

Feature

• Implements an existing feature request or RFC. Make sure the feature request has been accepted for implementation before opening a PR.
• Related issues linked using fixes #number
• Integration tests added
• Documentation added
• Telemetry added. In case of a feature if it's used or not.
• Errors have helpful link attached, see contributing.md

Documentation / Examples

• Make sure the linting passes by running yarn lint

[ijjk]

Thanks for the PR!