build: fix Commit Queue failure comment

Refs: #35206

PR-URL: #35599
Reviewed-By: Denys Otrishko <shishugi@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>

tools/actions/commit-queue.sh

@@ -67,8 +67,10 @@ for pr in "$@"; do
   if ! tail -n 10 output | grep '. Post "Landed in .*/pull/'"${pr}"; then
     gitHubCurl "$(labelsUrl "$pr")" POST --data '{"labels": ["'"${COMMIT_QUEUE_FAILED_LABEL}"'"]}'
 
-    cqurl="Commit Queue action: $GITHUB_SERVER_URL/${OWNER}/${REPOSITORY}/actions/runs/$GITHUB_RUN_ID"
-    jq -n --arg content "<details><summary>Commit Queue failed</summary><pre>$(cat output)</pre></details>\n$cqurl" '{body: $content}' > output.json
+    # Use printf to properly escape newline symbols for jq.
+    printf -v cqurl "\n\nCommit Queue action: %s/%s/%s/actions/runs/%s" \
+      "$GITHUB_SERVER_URL" "${OWNER}" "${REPOSITORY}" "$GITHUB_RUN_ID"
+    jq -n --arg content "<details><summary>Commit Queue failed</summary><pre>$(cat output)</pre></details>$cqurl" '{body: $content}' > output.json
     cat output.json
 
     gitHubCurl "$(commentsUrl "$pr")" POST --data @output.json