Update release_prep.sh

Fix TAG name

.github/workflows/release_prep.sh

@@ -6,7 +6,7 @@ set -o errexit -o nounset -o pipefail
 # https://docs.github.com/en/actions/learn-github-actions/environment-variables#default-environment-variables
 TAG=${GITHUB_REF_NAME}
 # The prefix is chosen to match what GitHub generates for source archives
-PREFIX="rules_foreign_cc-${TAG:1}"
+PREFIX="rules_foreign_cc-${TAG}"
 ARCHIVE="rules_foreign_cc-$TAG.tar.gz"
 git archive --format=tar --prefix=${PREFIX}/ ${TAG} | gzip > $ARCHIVE
 SHA=$(shasum -a 256 $ARCHIVE | awk '{print $1}')
@@ -18,7 +18,7 @@ cat << EOF
 2. Add to your \`MODULE.bazel\` file:
 
 \`\`\`starlark
-bazel_dep(name = "rules_foreign_cc", version = "${TAG:1}")
+bazel_dep(name = "rules_foreign_cc", version = "${TAG}")
 \`\`\`
 
 ## Using WORKSPACE
@@ -33,8 +33,14 @@ http_archive(
     strip_prefix = "${PREFIX}",
     url = "https://github.com/bazelbuild/rules_foreign_cc/releases/download/${TAG}/${ARCHIVE}",
 )
+
+load("@rules_foreign_cc//foreign_cc:repositories.bzl", "rules_foreign_cc_dependencies")
+
+# This sets up some common toolchains for building targets. For more details, please see
+# https://bazelbuild.github.io/rules_foreign_cc/${TAG}/flatten.html#rules_foreign_cc_dependencies
+rules_foreign_cc_dependencies()
 EOF
 
-# TODO: add example of how to configure for both bzlmod and WORKSPACE
+# TODO: add example of how to configure for bzlmod
 # awk 'f;/--SNIP--/{f=1}' e2e/smoke/WORKSPACE.bazel
 echo "\`\`\`"