Fix minor copy&paste errors.

src/main/java/graphgen/generator/components/properties/minII/feasible/FeasibleMinIIProperty.java

@@ -86,7 +86,7 @@ public class FeasibleMinIIProperty extends Property {
 			throw new IllegalArgumentException("The backedge delay must be greater than or equal to zero.");
 		}
 		if (backedgeDistance <= 0) {
-			throw new IllegalArgumentException("The backedge delay must be greater than zero.");
+			throw new IllegalArgumentException("The backedge distance must be greater than zero.");
 		}
 
 		this.minII = minII;

src/main/java/graphgen/generator/components/properties/minII/infeasible/InfeasibleMinIIProperty.java

@@ -91,7 +91,7 @@ public class InfeasibleMinIIProperty extends Property {
 			throw new IllegalArgumentException("The backedge delay must be greater than or equal to zero.");
 		}
 		if (backedgeDistance <= 0) {
-			throw new IllegalArgumentException("The backedge delay must be greater than zero.");
+			throw new IllegalArgumentException("The backedge distance must be greater than zero.");
 		}
 
 		this.minII = minII;