LVDS Termination - Not sure what it accomplishes
In AC analysis, assuming a well decoupled power supply, then the VCC and GND point can be considered directly connected. You can then work out resistor values which give an overall termination impedance to match your requirements.
For DC however, the VCC and GND are not shorted, they have some voltage between them. The resistors act like potential dividers which will set the lines to a DC bias point. You can calculate using potential divider equations what that DC voltage will be.
Essentially the termination allows you to apply a DC bias to your lines, which is certainly useful in the case of AC coupled signalling schemes. By adjusting the resistor values to be asymmetric between P and N, you can also implement a fail-safe biasing mode, whereby if one or both lines are broken (connector unplugged?) there will be a differential voltage between the two lines which will ensure the receiver reads a 1 or 0 rather than undefined.