I have attached the images.
Yes I could pick up a replacement, but where's the fun in that? 
It would be a bad idea to repair the trace before first locating the component that has obviously failed and short circuited. If you repair the trace with wire that will take more current than the original trace, then you will burn out something on your Amiga. If the trace got magically repaired (hypothetically) and you turn on your Amiga without first repairing the cause of the short circuit, then it will burn the trace again and possibly burn a component on the Amiga side (if it's not already done so). My advise is to buy a replacement 512K ram expansion.
