fix input-output order in interpreter example (#1763)

* fix input-output order in interpreter example

* Convert a string to f-string in the demo

from wkeithvan and ewdurbin

Co-authored-by: Ee W. Durbin III <ewdurbin@gmail.com>

Co-authored-by: Ee W. Durbin III <ewdurbin@gmail.com>

Author: sblondon

codesamples/factories.py

@@ -31,10 +31,10 @@ def initial_data():
 
             <span class=\"comment\"># Input, assignment</span>
             >>> name = input('What is your name?\\n')
-            >>> print('Hi, %s.' % name)
             <span class=\"output\">What is your name?
-            Python
-            Hi, Python.</span></code>
+            Python</span>
+            >>> print(f'Hi, {name}.')
+            <span class=\"output\">Hi, Python.</span></code>
             </pre>
             """,
             """\