I think I've got this one figured out. It appears that it does actually affect citadel priests ( they just heal about 1/10 that of minion priests. )
The mod actually changes the buffaffects.lua, so anything with MaxHealthPercent in the affects section will be changed by this.
So far, I think this is only priests, but there might be others.
The formula for the amount healed is: 100 + ( 25xLevelxMaxHealthPercent ), with MaxHealthPercent being the number from the buff blueprint.
In the case of the Minion ( high ) priest 1, without healing wind, this is 1.
So, if you were level 1, this would be: 100 + (25x1x1) = 125
If you were level 20: 100 + (25x20x1) = 600
High priest 4 with healing wind is 3.4, bringing the healed amount up to 1800.
The citadel minions with healing wind is 0.15, so 175.
Anyways, for the OP: When you make a mod, I recommend also including a zip as many people ( rightly so ) dont like using executables. More importantly though, you should only include the blocks from files that you added/changed, not the entire file. This helps massively with mod compatability, and makes life simpler for you, or anyone modding your mod:)