correct an example
diff --git a/Doc/library/stdtypes.rst b/Doc/library/stdtypes.rst
index 5ac062a..685dd2b 100644
--- a/Doc/library/stdtypes.rst
+++ b/Doc/library/stdtypes.rst
@@ -1956,7 +1956,7 @@
 
    >>> # set operations
    >>> keys & {'eggs', 'bacon', 'salad'}
-   {'eggs', 'bacon'}
+   {'bacon'}
 
 
 .. _bltin-file-objects: