put code block in collapsible box

docs/Assignments/week_4_programming/programming.md

@@ -338,30 +338,30 @@ Im going to map everything lower than 80 to 80 using software. The reason im doi
 Luckily there is an arduino function called `map` that can do this. [Source](https://docs.arduino.cc/language-reference/en/functions/math/map/). The syntax is like this `map(value, fromLow, fromHigh, toLow, toHigh)` so it's really easy to use. This is how I implemented it. 
 
 During coding I realized this could be done way easier and simpler. So this is my result 
+??? code
+    ```cpp
+    #include <Arduino.h>
 
-```cpp
-#include <Arduino.h>
+    int pot1 = 0;
+    int Mpot1 = 0; //mapped pot
 
-int pot1 = 0;
-int Mpot1 = 0; //mapped pot
+    void setup(){
+      Serial.begin(9600);
+      pinMode(0, INPUT);
+    }
 
-void setup(){
-  Serial.begin(9600);
-  pinMode(0, INPUT);
-}
-
-void loop(){
-  pot1 = analogRead(0); //store potmeter value in pot1
-  
-  if (pot1 <= 80){ //check if pot1 is lower than 80, if yes make it 80
-    Mpot1 = 80;
-  }
-  else {
-    Mpot1 = pot1; //if pot1 is above 80 just copy over pot1 to Mpot1
-  }
-  Serial.println(Mpot1);
-}
-```
+    void loop(){
+      pot1 = analogRead(0); //store potmeter value in pot1
+      
+      if (pot1 <= 80){ //check if pot1 is lower than 80, if yes make it 80
+        Mpot1 = 80;
+      }
+      else {
+        Mpot1 = pot1; //if pot1 is above 80 just copy over pot1 to Mpot1
+      }
+      Serial.println(Mpot1);
+    }
+    ```
 This code works and makes any value under 80 automatically 80. And keeps all values above the original value.
 
 I've cleaned it up a bit and turned it into a function so I don't have to copy paste code later on and so it stays clean.