updated code for issue number - 8

Author: nirban256

Chapter01/hello_tkinter.py

@@ -2,11 +2,11 @@
 
 
 from tkinter import *
-from tkinter.ttk 
-import *
+from tkinter.ttk import *
 
 root = Tk()
 
 label = Label(root, text="Hello World")
 label.pack()
-root.mainloop()
+
+root.mainloop()