Add message to route the PCB

Author: cheyao

website/src/pages/hackpad/Tutorial.mdx

@@ -84,6 +84,8 @@ Click anywhere on your screen to place your components down, it should look some
 
 Lay out the components as you wish, and go over the the edge.cuts layer and create a rectangle. This will be your board size! 
 
+Don't forget to route the PCB! Connect the footprints using copper traces. You should have something like this:
+
 <img src="/docs/v2/edgecuts.png" className="max-w-96" />
 
 Also, it is **VERY IMPORTANT** that you brand your hackpad! Put the name of your hackpad on any silkscreen of your PCB. Do this by using the text tool. Also, write "XIAO HERE" on the side you would like your XIAO to be placed on.