misspelling error correction

ContactManager.py

@@ -130,7 +130,7 @@ class ContactManager(Device):
     )
     CONTACT_LIST_PROPERTY_DOC = f"{CONTACT_LIST_PROPERTY_DOC}\n"
     CONTACT_LIST_PROPERTY_DOC = (
-        f"{CONTACT_LIST_PROPERTY_DOC}\nWith this example, {CONTACT_ATTR} attribut"
+        f"{CONTACT_LIST_PROPERTY_DOC}\nWith this example, {CONTACT_ATTR} attribute"
     )
     CONTACT_LIST_PROPERTY_DOC = f"{CONTACT_LIST_PROPERTY_DOC} will have the enum labels"
     CONTACT_LIST_PROPERTY_DOC = f'{CONTACT_LIST_PROPERTY_DOC} ["{DEFAULT_CONTACT_VALUE}", "John", "Jack", "Telma"].'