explain the max-allowed-end parameter

draft-ietf-netmod-schedule-yang.md

@@ -152,7 +152,7 @@ Also, this document uses the YANG terminology defined in {{Section 3 of !RFC7950
 
    The "max-allowed-end" parameter specifies the maximum allowed end time of
    the last occurrence. A requested schedule will be rejected if the end time
-   of last occurrence of the schedule is later than the configured "max-allowed-end" value.
+   of last occurrence is later than the configured "max-allowed-end" value.
 
    The "discard-action" parameter specifies the action if a requested schedule
    is considered inactive or out-of-date.