Doc formatting update for office_365_connector_card.py (ansible#38142)

* Update office_365_connector_card.py

The two bullet items were about one single item; this module is not idempotent.
Therefore the two bullet items should be one.

 label: docsite_pr

* Update office_365_connector_card.py

Removed trailing white space that caused the test failure.

lib/ansible/modules/notification/office_365_connector_card.py

@@ -21,7 +21,7 @@
 author: "Marc Sensenich"
 notes:
   - This module is not idempotent, therefore if the same task is run twice
-  - there will be two Connector Cards created
+    there will be two Connector Cards created
 options:
   webhook:
     description: