Apply suggestions from code review

Author: nasbench

.github/workflows/sigma-test.yml

@@ -77,4 +77,4 @@ jobs:
     - name: Check for duplicate IDs
       shell: /usr/bin/bash {0}  # Use bash without -e to enable exit code manipulation
       run: |
-        grep -rh "^id: " rules* deprecated unsupported | sort | uniq -c | grep -vE "^\s+1 id: "; exit $(( $? ^ 1 ))
+        grep -rh "^id: " rules* deprecated unsupported | sort | uniq -c | grep -vE "^\s+1 id: "; exit $(( $? ^ 1 ))