use prerelease-link-subdomain instead of quarto-root metadata

Author: gordonwoodhull

docs/blog/posts/2026-03-05-pdf-accessibility-and-standards/index.qmd

@@ -6,7 +6,6 @@ author: Gordon Woodhull
 date: "2026-03-05"
 image: verapdf.jpg
 image-alt: "veraPDF logo"
-quarto-root: https://prerelease.quarto.org
 ---
 
 {{< include ../_quarto-1.9-feature.qmd >}}
@@ -84,9 +83,9 @@ Quarto's Markdown-based workflow handles many accessibility requirements automat
 But you do need to make sure your document has:
 
 * A **title** in the YAML front matter.
-* **Alt text for every image**, specified with `fig-alt`. See [Figures]({{< meta quarto-root >}}/docs/authoring/figures.html#alt-text) for details.
+* **Alt text for every image**, specified with `fig-alt`. See [Figures](https://{{< meta prerelease-link-subdomain >}}quarto.org/docs/authoring/figures.html#alt-text) for details.
 
-See the [LaTeX]({{< meta quarto-root >}}/docs/output-formats/pdf-basics.html#accessibility-requirements) and [Typst]({{< meta quarto-root >}}/docs/output-formats/typst.html#accessibility-requirements) documentation for more details.
+See the [LaTeX](https://{{< meta prerelease-link-subdomain >}}quarto.org/docs/output-formats/pdf-basics.html#accessibility-requirements) and [Typst](https://{{< meta prerelease-link-subdomain >}}quarto.org/docs/output-formats/typst.html#accessibility-requirements) documentation for more details.
 
 ## If your document fails validation
 
@@ -102,7 +101,7 @@ We ran our test suite -- 188 LaTeX examples and 317 Typst examples -- to find wh
 
 Margin content is the biggest structural blocker. If you use `.column-margin` divs, `cap-location: margin`, `reference-location: margin`, or `citation-location: margin`, the resulting PDF will not pass UA-2. The underlying `sidenotes` and `marginnote` LaTeX packages [do not cooperate with PDF tagging](https://github.com/quarto-dev/quarto-cli/issues/14103). 
 
-(Margin content does work with Typst and passes UA-1 -- see [Typst Article Layout]({{< meta quarto-root >}}/docs/output-formats/typst.html#article-layout).)
+(Margin content does work with Typst and passes UA-1 -- see [Typst Article Layout](https://{{< meta prerelease-link-subdomain >}}quarto.org/docs/output-formats/typst.html#article-layout).)
 
 There are smaller upstream issues in Pandoc, LaTeX, and LaTeX packages, [documented here](https://github.com/quarto-dev/quarto-cli/pull/14097#issuecomment-3947653207).
 
@@ -112,7 +111,7 @@ In our tests, Typst catches every UA-1 violation, and fails to generate the PDF.
 
 Typst also seems to do a very good job of generating UA-1 compliant output by default -- almost all errors were due to missing titles or missing alt text.
 
-However, we did discover that [Typst Books]({{< meta quarto-root >}}/docs/books/book-output.html#typst-output) are not yet compliant. There is a [structural problem with the Typst orange-book package](https://github.com/flavio20002/typst-orange-template/issues/38) and we'll work with the maintainers to correct it.
+However, we did discover that [Typst Books](https://{{< meta prerelease-link-subdomain >}}quarto.org/docs/books/book-output.html#typst-output) are not yet compliant. There is a [structural problem with the Typst orange-book package](https://github.com/flavio20002/typst-orange-template/issues/38) and we'll work with the maintainers to correct it.
 
 ## Conclusion
 

docs/blog/posts/_quarto-1.9-feature.qmd

@@ -1,5 +1,5 @@
 ::: callout-note
 ## Pre-release Feature
 
-This feature is new in the upcoming Quarto 1.9 release. To use the feature now, you'll need to [download and install]({{< meta quarto-root >}}/docs/download/prerelease.html) the Quarto pre-release.
+This feature is new in the upcoming Quarto 1.9 release. To use the feature now, you'll need to [download and install](https://{{< meta prerelease-link-subdomain >}}quarto.org/docs/download/prerelease.html) the Quarto pre-release.
 :::