Fix reference to print 'returning' a value

docs/source/interactive/reference.rst

@@ -629,7 +629,7 b' some sort, you can then exit::'
 
   In [2]: exit()
 
-Once you exit and print `a`, the value 23 will be returned::
+Once you exit and print `a`, the value 23 will be shown::
 
 
   In: print(a)