The chart at the top of the page lists the wire color order as Start Finish Finish Start (S F F S) (see Diagram 1) which is basically the standard wiring for a humbucker in series.
That other chart lists the wire colors in order by Start Finish Start Finish (S F S F) (see Diagram 2).
The "S F S F" wire color order is still very popular and some additional examples are:
To add to the confusion, websites that list the coils in "S F S F" order will also assign letters to the coils in the same order.
Again using DiMarzio as the example, the "S F S F" lettering for the coils would be
These sights also say to connect 'B' to 'D' to make the series link.
Still, doesn't it make more sense to letter the wire colors so that the "middle" wires for the series link are called B & C?
Anyway, there are some sites that show wire colors in the same order that they are in my chart.
Here is a listing of those sites listing wire colors in 'S F F S' order:
So to summarize, this chart lists pickup wire colors in "Start Finish Finish Start" order. The 2 wires for the series link will always be the middle two wires.