removing extraneous brackets from quiz

3-terrarium/3-intro-to-DOM-and-closures/.github/pre-lecture-quiz.md

@@ -4,15 +4,15 @@ Complete this quiz in class
 
 1. The DOM stands for 'Document Object Management'
 
-- [ ] [true]
-- [ ] [false]
+- [ ] true
+- [ ] false
 
 2. The DOM can be thought of as a tree
 
-- [ ] [true]
-- [ ] [false]
+- [ ] true
+- [ ] false
 
 3. Using the Web API, you can manipulate the DOM
 
-- [ ] [true]
-- [ ] [false]
+- [ ] true
+- [ ] false