Update coreutils_toolchain.bzl

fix typo in url

lib/private/coreutils_toolchain.bzl

diff --git a/lib/private/coreutils_toolchain.bzl b/lib/private/coreutils_toolchain.bzl
index 781dfaa..1005278 100644
--- a/lib/private/coreutils_toolchain.bzl
+++ b/lib/private/coreutils_toolchain.bzl
@@ -36,7 +36,7 @@
 
 DEFAULT_COREUTILS_VERSION = "0.0.16"
 
-# https://github.com/mikefarah/coreutils/releases
+# https://github.com/uutils/coreutils/releases
 #
 # The integrity hashes can be automatically fetched for the coreutils releases by running
 # `tools/coreutils_mirror_release.sh`.