Fix closes issue10403 - Let's not use members anymore.
diff --git a/Doc/library/cookie.rst b/Doc/library/cookie.rst
index 3bdc61a..de84568 100644
--- a/Doc/library/cookie.rst
+++ b/Doc/library/cookie.rst
@@ -191,7 +191,7 @@
 
 .. method:: Morsel.set(key, value, coded_value)
 
-   Set the *key*, *value* and *coded_value* members.
+   Set the *key*, *value* and *coded_value* attributes.
 
 
 .. method:: Morsel.isReservedKey(K)