Fix typo in optimization.py

Author: mjs2600

chapter5/optimization.py

@@ -148,7 +148,7 @@ def annealingoptimize(domain,costf,T=10000.0,cool=0.95,step=1):
   return vec
 
 def geneticoptimize(domain,costf,popsize=50,step=1,
-                    mutprod=0.2,elite=0.2,maxiter=100):
+                    mutprob=0.2,elite=0.2,maxiter=100):
   # Mutation Operation
   def mutate(vec):
     i=random.randint(0,len(domain)-1)