Fix dimension multiplier bug

Author: davidask

Sources/LayoutAid/Height.swift

@@ -34,6 +34,6 @@ public struct Height: DimensionConstraintsGenerator {
         self.relation = relation
         self.constant = constant
         self.secondAnchor = secondAnchor
-        self.multiplier = 1
+        self.multiplier = multiplier
     }
 }

Sources/LayoutAid/Width.swift

@@ -34,6 +34,6 @@ public struct Width: DimensionConstraintsGenerator {
         self.relation = relation
         self.constant = constant
         self.secondAnchor = secondAnchor
-        self.multiplier = 1
+        self.multiplier = multiplier
     }
 }