I am in the process of making my own circuit boards. When I look at the image of the detector circuit board on your web site it doesn\'t seem to match what is documented in the module pdf. There seem to be some connections missing on the top side of the module in the pdf file. Is there a mistake?

No there is no mistake in the detector module.
If you would use the circuit boards bought by catrain, the briges are already prefabrycated.
If you make your own boards you have to make those bridges yourself.

Goodluck,
Keimpe