Move RFS version in config.yml and update it.

config.yml

@@ -50,6 +50,7 @@ params:
   current_version:      "4.6.0"
   current_ruby_version: "4.6.0"
   docs_version:         "4.6"
+  rfs_version:          "v8.1.0"
   github_org:           "https://github.com/twbs"
   repo:                 "https://github.com/twbs/bootstrap"
   twitter:              "getbootstrap"

site/content/docs/4.6/content/typography.md

@@ -283,4 +283,4 @@ Align terms and descriptions horizontally by using our grid system's predefined
 
 As of v4.3.0, Bootstrap ships with the option to enable responsive font sizes, allowing text to scale more naturally across device and viewport sizes. <abbr title="Responsive font sizes">RFS</abbr> can be enabled by changing the `$enable-responsive-font-sizes` Sass variable to `true` and recompiling Bootstrap.
 
-To support <abbr title="Responsive font sizes">RFS</abbr>, we use a Sass mixin to replace our normal `font-size` properties. Responsive font sizes will be compiled into `calc()` functions with a mix of `rem` and viewport units to enable the responsive scaling behavior. More about <abbr title="Responsive font sizes">RFS</abbr> and its configuration can be found on its [GitHub repository](https://github.com/twbs/rfs/tree/v8.0.4).
+To support <abbr title="Responsive font sizes">RFS</abbr>, we use a Sass mixin to replace our normal `font-size` properties. Responsive font sizes will be compiled into `calc()` functions with a mix of `rem` and viewport units to enable the responsive scaling behavior. More about <abbr title="Responsive font sizes">RFS</abbr> and its configuration can be found on its [GitHub repository](https://github.com/twbs/rfs/tree/{{< param "rfs_version" >}}).