message: Updates references to item #s
diff: @@ -88,7 +88,7 @@ For an upgrade, check the [Pizza build](../pizza_build.md).
  can be sent to you.
  2. Take note of the specifically RPI3+ or RPI4 components. Don't get the wrong ones.
  3. If you are not (yet) able to get a PCB, get items 18 and 19
  -4. If you are getting a PCB, and a power cable is included, you will not need 15-17, nor T2
  +4. If you are getting a PCB, and a power cable is included, you will not need items 15-17, nor a2
  5. If you are feeling stingy, don't get the touchscreen (item 3). You can connect the RasPi to any monitor and use
  a mouse and keyboard to control it.
  