Update README.md

Author: pdeitel

README.md

@@ -1,6 +1,6 @@
 **NOTE:** If you're trying to run the RollDieDynamic.py script in Chapter 1 and the window does not appear, this is due to a known issue in the software for which a fix is already in process. You can instead run the program with 
 
-`ipython -i RollDieDynamic.py 6000 1`
+>`ipython -i RollDieDynamic.py 6000 1`
     
 Then terminate IPython interactive mode (Ctrl + D twice) after you close the script's window.