Update dynamic_routing.md

[chicago4kbike]

minor typo?

[greptile-apps]

Greptile Summary

This PR corrects a documentation error in docs/pages/dynamic_routing.md. The code example on line 29 defines the route /post/[pid] and accesses the dynamic segment via rx.State.pid, but the explanatory prose below incorrectly referenced it as State.post_id. The change fixes this inconsistency by updating the reference to State.pid.

• Corrects State.post_id → State.pid in the prose description to match the route parameter [pid] used in the code example.

Confidence Score: 5/5

• This PR is safe to merge — it is a single-word documentation correction with no code changes.
• The change is a minimal, clearly correct fix to a documentation typo. The updated reference State.pid accurately matches the dynamic route segment [pid] defined in the adjacent code example. No logic, configuration, or executable code is affected.
• No files require special attention.

Important Files Changed

Filename	Overview
docs/pages/dynamic_routing.md	Single-line documentation fix: corrects State.post_id to State.pid to match the actual route parameter [pid] used in the code example.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A["URL: /post/[pid]"] --> B{"Dynamic segment matched?"}
    B -- "Yes (e.g. /post/5)" --> C["State.pid = '5'"]
    B -- "Yes (e.g. /post/xyz)" --> D["State.pid = 'xyz'"]
    B -- "No trailing value (/post/)" --> E["State.pid = ''"]
    C --> F["rx.heading renders value"]
    D --> F
    E --> F

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_{Last reviewed commit: 179b4fe}