Update CodeQL.yaml

Author: sruke

CodeQL.yaml

@@ -4,8 +4,9 @@
 # https://eng.ms/docs/cloud-ai-platform/devdiv/one-engineering-system-1es/1es-docs/codeql/troubleshooting/bugs/generated-library-code#configuring-exclusion-file
 
 path_classifiers:
-# All files and subdirectories under `tests/` and `benchmark/` will be classified as test code.
   test:
+  # All sub-directories are automatically matched. For example: tests/ matches anything in the directory and all its subdirectories.
+  # Do not add /** wildcard at the end of a directory path.
     - "tests/"
     - "benchmark/"
   docs: