Docs: use 'added' page information to display a tag on top of the pages (#37341)

site/content/docs/5.2/helpers/color-background.md

@@ -9,8 +9,6 @@ added: "5.2"
 
 ## Overview
 
-{{< added-in "5.2.0" >}}
-
 Color and background helpers combine the power of our [`.text-*` utilities]({{< docsref "/utilities/colors" >}}) and [`.bg-*` utilities]({{< docsref "/utilities/background" >}}) in one class. Using our Sass `color-contrast()` function, we automatically determine a contrasting `color` for a particular `background-color`.
 
 {{< callout warning >}}

site/layouts/_default/docs.html

@@ -16,9 +16,12 @@
     <main class="bd-main order-1">
       <div class="bd-intro pt-2 ps-lg-2">
         <div class="d-md-flex flex-md-row-reverse align-items-center justify-content-between">
-          <a class="btn btn-sm btn-bd-light mb-3 mb-md-0 rounded-2" href="{{ .Site.Params.repo }}/blob/v{{ .Site.Params.current_version }}/site/content/{{ .Page.File.Path | replaceRE `\\` "/" }}" title="View and edit this file on GitHub" target="_blank" rel="noopener">
-            View on GitHub
-          </a>
+          <div class="mb-3 mb-md-0 d-flex">
+            <small class="d-inline-flex px-2 py-1 fw-semibold text-success bg-success bg-opacity-10 border border-success border-opacity-10 rounded-2 me-2">Added in v{{ .Page.Params.added }}</small>
+            <a class="btn btn-sm btn-bd-light rounded-2" href="{{ .Site.Params.repo }}/blob/v{{ .Site.Params.current_version }}/site/content/{{ .Page.File.Path | replaceRE `\\` "/" }}" title="View and edit this file on GitHub" target="_blank" rel="noopener">
+              View on GitHub
+            </a>
+          </div>
           <h1 class="bd-title mb-0" id="content">{{ .Title | markdownify }}</h1>
         </div>
         <p class="bd-lead">{{ .Page.Params.Description | markdownify }}</p>