fix typo

markov.py

@@ -37,7 +37,7 @@ class Markov:
 
         text = text.replace("\n", " ")
         text = text.split(" ")
-        text = map(lambda word: word.strip, text)
+        text = map(lambda word: word.strip(), text)
         text = filter(bool, text)
         text = list(text)