Incorrect self._s value in E4-1.py

self._s has an incorrect value asignment in the __Init__() method.

Expected value for self._s is s.
Actual value for self._s is h

I have updated the value of self._s to s.

Author: alexhewson

exercise-code/E4-1.py

@@ -5,7 +5,7 @@ class Time:
     def __init__(self,h,m,s):
         self._h = h 
         self._m = m
-        self._s = h
+        self._s = s
 
     #Read-only field accessors
     @property