bpo-40640: doc -- add missing ... in example of Continue (#26055)

Co-authored-by: Chas Belov <[email protected]>

Author: iritkatriel

Doc/tutorial/controlflow.rst

@@ -214,6 +214,7 @@ iteration of the loop::
     ...         print("Found an even number", num)
     ...         continue
     ...     print("Found an odd number", num)
+    ...
     Found an even number 2
     Found an odd number 3
     Found an even number 4