Update milestone2.md

Author: faizanx168

milestones/milestone2.md

@@ -1,16 +1,15 @@
 # Milestone 2
 
-This document should be completed and submitted during **Unit 6** of this course. You **must** check off all completed tasks in this document in order to receive credit for your work.
 
 ## Checklist
 
-This unit, be sure to complete all tasks listed below. To complete a task, place an `x` between the brackets.
+In this unit, be sure to complete all tasks listed below. To complete a task, place an `x` between the brackets.
 
-- [ ] In `planning/wireframes.md`: add wireframes for at least three pages in your web app
-- [ ] In `planning/entity_relationship_diagram.md`: add the entity relationship diagram you developed for your database
-- [ ] Prepare your three-minute pitch presentation, to be presented during Unit 7 (the next unit)
-  - [ ] You do **not** need to submit any materials in advance of your pitch
-- [ ] In this document, complete the **Reflection** section below
+- [x] In `planning/wireframes.md`: add wireframes for at least three pages in your web app
+- [x] In `planning/entity_relationship_diagram.md`: add the entity relationship diagram you developed for your database
+- [x] Prepare your three-minute pitch presentation, to be presented during Unit 7 (the next unit)
+  - [x] You do **not** need to submit any materials in advance of your pitch
+- [x] In this document, complete the **Reflection** section below
 
 ## Reflection