[CI] Update awk for log-results

Author: picandocodigo

.buildkite/log-results.sh

@@ -17,6 +17,6 @@ for f in $files; do
   FAILED_TESTS=`grep "E," $f`
   if [[ -n "$FAILED_TESTS" ]]; then
     buildkite-agent annotate --append "#### Failures in $f "
-    buildkite-agent annotate --append `grep "E," $f | awk -F '-- :' '{print $2}'`
+    buildkite-agent annotate --append `grep "E," $f | awk -F "-- :" "{print $2}"`
   fi
 done