update modified included-file.md

Author: sidpalas

03-core-features/filters/included-file.md

@@ -0,0 +1,9 @@
+This change will trigger a workflow run based on these path filters:
+
+```yaml
+paths:
+  # include markdown files
+  - "03-core-features/filters/*.md"
+  # Exclude txt files
+  - "!03-core-features/filters/*.txt"
+```