Update BCR location to bcr.bazel.build

registry.bazel.build will soon points to its web front end, will add documentation later.

RELNOTES: None
PiperOrigin-RevId: 460169069
Change-Id: I8b2252fa2bd4f73dcfbc30feaee4bb99413501e2
diff --git a/site/en/docs/bzlmod.md b/site/en/docs/bzlmod.md
index 907ab83..b951ccf 100644
--- a/site/en/docs/bzlmod.md
+++ b/site/en/docs/bzlmod.md
@@ -252,7 +252,7 @@
 ### Bazel Central Registry {:#bazel-central-registry}
 
 Bazel Central Registry (BCR) is an index registry located at
-[registry.bazel.build](https://registry.bazel.build){: .external}. Its contents
+[bcr.bazel.build](https://bcr.bazel.build){: .external}. Its contents
 are backed by the GitHub repo
 [`bazelbuild/bazel-central-registry`](https://github.com/bazelbuild/bazel-central-registry){: .external}.