docs: fix typo in `authoring content.md` (#408)

Ben Schlegel

2023-08-24 9d2340e90b55fb9480e0901bc7360f3d72e688da

 quartz/plugins/emitters/componentResources.ts

@@ -103,7 +103,7 @@
  } else {
    componentResources.afterDOMLoaded.push(`
        window.spaNavigate = (url, _) => window.location.assign(url)
        const event = new CustomEvent("nav", { detail: { slug: document.body.dataset.slug } })
        const event = new CustomEvent("nav", { detail: { url: document.body.dataset.slug } })
        document.dispatchEvent(event)`)
  }