Air carrier Captain reported mistaking building lighting for approach lighting while conducting a VOR approach to minimums at MGGT and advocated for added emphasis of this phenomenon on approach briefs and charting.

Narrative

We were cleared for the app VOR Z Runway 20; weather was reporting 1400 BKN 8 miles vis. -RA as well. After reviewing special briefing and our company pages we settled on Flaps 40 brakes Max scenario due to the rain and the slope. There was weather all the way to minimums at 50 feet above mi s I saw two lights on the hud that looked like the approach lights; I called them out and said contact approach lights; at minimums the lights disappeared and we executed a go around and diverted to ZZZZ. We figured out that the lights I saw were the two lights on top of the building and not the runway.The briefing on the app is VERY OUT OF DATE! Nowhere in the briefing does it mention that the building approach lights will be seen at minimums in the weather; it does mention not to confuse the lights with the runway; but it does not warn pilots flying down to mins that those lights will be brighter and will show up in the soup; baiting the crew to fly the approach. When this approach is flown down to mins the crew should be aware that those lights will pop up at close to mins because they are closer to the plane. After our divert we flew the same approach down to mins I saw the lights at 100 ft above mins but broke out and was able to find the runway ok; however this approach is not aligned with the runway it brings you in to the right; so difficult to move the jet to the left and land on a 1.4 deg downslope slick runway non- grooved at that.My suggestion please update Jepp pages to warn us about this approach; add and update the GUA brief to include IMC approach and how the building lights can be a factor. We are sending very young Captains and First Officers (FOs); to this place; and with our changes to pilot time qualifications; they could very well have less than 100 each and never having flown into this airport it is setting company up for a disaster; this is a TOUGH airport to get in even at the top of one's game. Let's make our info match the reality and update GUA with this data.