inserting macros instead of hard coded board names

docs/lessons/dice-roll/challenges.md

@@ -121,7 +121,7 @@ input.onGesture(Gesture.Shake, () => {
 
 ### Challenge 2
 
-Let's make a trick dice! Modify the line of code with `pick random` so that only numbers 3-6 can appear on the dice. Also note that we need to ensure `roll = 0` when only 1 dot is shown on the BBC micro:bit.
+Let's make a trick dice! Modify the line of code with `pick random` so that only numbers 3-6 can appear on the dice. Also note that we need to ensure `roll = 0` when only 1 dot is shown on the @boardname@.
 
 ```blocks 
 input.onGesture(Gesture.Shake, () => {
@@ -179,5 +179,5 @@ input.onGesture(Gesture.Shake, () => {
 
 ### Challenge 3
 
-Add a couple more conditions so that the BBC micro:bit randomly chooses a number between 1 and 8.
+Add a couple more conditions so that the @boardname@ randomly chooses a number between 1 and 8.
 

docs/lessons/dice-roll/quiz-answers.md

@@ -1,6 +1,6 @@
 # dice roll quiz answers
 
-Create a dice when the BBC micro:bit is shaken 
+Create a dice when the @boardname@ is shaken 
 
 These are the answers to the [dice roll quiz](/lessons/dice-roll/quiz).
 

docs/lessons/dice-roll/quiz.md

@@ -1,6 +1,6 @@
 # dice roll quiz
 
-Create a dice when the BBC micro:bit is shaken 
+Create a dice when the @boardname@ is shaken 
 
 ## Name