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

Co-authored-by: Chas Belov <59780179+ChasBelov@users.noreply.github.com>
diff --git a/Doc/tutorial/controlflow.rst b/Doc/tutorial/controlflow.rst
index 0b09c18..ee2c3e5 100644
--- a/Doc/tutorial/controlflow.rst
+++ b/Doc/tutorial/controlflow.rst
@@ -214,6 +214,7 @@
     ...         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