Make sure PR description is correctly formatted with newlines

Signed-off-by: Furkat Gofurov <[email protected]>

Author: furkatgofurov7

hack/publish-index-changes.sh

@@ -9,7 +9,7 @@ RELEASE_TAG="$1"
 BRANCH_NAME="index-${RELEASE_TAG}"
 COMMIT_MESSAGE="This PR updates index.yaml for ${RELEASE_TAG}. Automatically generated by make update-helm-repo."
 PR_TITLE="🌱 Update helm chart index.yaml to ${RELEASE_TAG}"
-PR_DESCRIPTION="**What this PR does / why we need it:**\n\nThis PR updates index.yaml for ${RELEASE_TAG}. Automatically generated by \`make update-helm-repo\`."
+PR_DESCRIPTION=$(printf "**What this PR does / why we need it:**\n\nThis PR updates index.yaml for ${RELEASE_TAG}.\n\nAutomatically generated by \`make update-helm-repo\`.")
 
 # Checkout index-${RELEASE_TAG} branch
 git checkout -b "${BRANCH_NAME}"