add BOM

Author: Hamidalavi

Learn/11. More about DOM & Browser APIs.md

@@ -5,7 +5,7 @@ In this course, you will learn about:
 - Attaching Data to Elements
 - Working with Element Coordinates & Sizes
 - Working with Templates & Dynamic Scripts
-- `window.location`, `window.history` & `window.navigator`
+- `window.location`, `window.history` & `window.navigator` (BOM)
 - Working with Dates
 - Working with Errors