Link referenced Dockerfile in the /scripts/README.md

I linked the Dockerfile that the README.md in /scripts/ was referencing.

Closes #13715.

PiperOrigin-RevId: 387791321
diff --git a/scripts/docs/README.md b/scripts/docs/README.md
index 817fb19..1740902 100644
--- a/scripts/docs/README.md
+++ b/scripts/docs/README.md
@@ -1,4 +1,4 @@
 This directory contains files required to build Bazel's website.
 
 The website is built using Jekyll running inside a Docker container.
-See the `Dockerfile` for instructions how to test this on your local machine.
+See the [`Dockerfile`](https://github.com/bazelbuild/bazel/blob/HEAD/scripts/docs/Dockerfile) for instructions how to test this on your local machine.