fix(CustomNetherPortals): Small typo Causing Havok With Portals (#102)

Co-authored-by: Jake Potrebic <jake.m.potrebic@gmail.com>

Author: Goinging

src/main/java/me/machinemaker/papertweaks/modules/survival/customnetherportals/PortalShapeFinder.java

@@ -102,7 +102,7 @@ boolean start() {
             final ToIntFunction<Block> flatFunction = this.axis == IgniteListener.Axis.X ? Block::getX : Block::getZ;
 
             final Block maxFlatBlock = Collections.max(this.portalInterior, Comparator.comparingInt(flatFunction));
-            final Block minFlatBlock = Collections.max(this.portalInterior, Comparator.comparingInt(flatFunction));
+            final Block minFlatBlock = Collections.min(this.portalInterior, Comparator.comparingInt(flatFunction));
 
             if (flatFunction.applyAsInt(maxFlatBlock) - flatFunction.applyAsInt(minFlatBlock) > config.maxPortalWidth) {
                 return false;