Update zod imports in the backend-deno docs

[pklaschka]

• main
  • Update dependencies and runtime for backend-deno #444
    • Update zod imports in the backend-deno docs #445 👈

[Copilot]

Pull Request Overview

This PR updates the zod library import statements in the backend-deno documentation to use the JSR registry (jsr:@zod/zod) instead of the deprecated deno.land URL. Additionally, it updates the reference link to point to the official zod documentation site and makes minor formatting improvements to markdown list items.

• Updates zod import statements from https://deno.land/x/zod@v3.x.x/mod.ts to jsr:@zod/zod
• Updates documentation reference link from GitHub repository to official zod documentation
• Improves markdown formatting consistency by converting bullet points from * to -

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
docs/docs/Backend Development/typescript/message-bus.md	Updates zod import to JSR registry, changes reference link to official docs, and fixes minor formatting issues with blank lines
docs/docs/Backend Development/typescript/configuration.md	Updates zod import to JSR registry and standardizes markdown list formatting to use dashes

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