Scheduler: Update Time Zone demo desc. following feedback (#30950)

Author: arman-boyakhchyan

apps/demos/Demos/Scheduler/TimeZonesSupport/description.md

@@ -1,6 +1,6 @@
-Our DevExtreme Scheduler allows you to specify time zones for the component and its appointments. In this demo, you can change the component time zone using the [SelectBox](/Documentation/Guide/UI_Components/SelectBox/Overview/) above the Scheduler. A [getTimeZones()](/Documentation/ApiReference/Common/Utils/utils/#getTimeZonesdate_timeZones) method call populates the SelectBox with values.
+DevExtreme Scheduler allows you to specify time zones used for the component and associated events/appointments. In this demo, you can change the time zone using the [SelectBox](/Documentation/Guide/UI_Components/SelectBox/Overview/) positioned above the Scheduler. A [getTimeZones()](/Documentation/ApiReference/Common/Utils/utils/#getTimeZonesdate_timeZones) method call populates the SelectBox with appropriate values.
 <!--split-->
 
-To define the time zone on the component level, assign an <a href="https://en.wikipedia.org/wiki/List_of_tz_database_time_zones" target="_blank">IANA time zone</a> value to the [timeZone](/Documentation/ApiReference/UI_Components/dxScheduler/Configuration/#timeZone) property.
+To define the time zone at the component level, assign an <a href="https://en.wikipedia.org/wiki/List_of_tz_database_time_zones" target="_blank">IANA time zone</a> value to the [timeZone](/Documentation/ApiReference/UI_Components/dxScheduler/Configuration/#timeZone) property.
 
-To change time zones for appointments, enable the **editing**.[allowTimeZoneEditing](/Documentation/ApiReference/UI_Components/dxScheduler/Configuration/editing/#allowTimeZoneEditing) option. Our Scheduler supports different time zones for appointment start and end dates ([startDateTimeZone](/Documentation/ApiReference/UI_Components/dxScheduler/Interfaces/dxSchedulerAppointment/#startDateTimeZone) and [endDateTimeZone](/Documentation/ApiReference/UI_Components/dxScheduler/Interfaces/dxSchedulerAppointment/#endDateTimeZone) appointment properties).
+To modify time zones used for appointments, enable the **editing**.[allowTimeZoneEditing](/Documentation/ApiReference/UI_Components/dxScheduler/Configuration/editing/#allowTimeZoneEditing) option. Our Scheduler supports different time zones for appointment start and end dates ([startDateTimeZone](/Documentation/ApiReference/UI_Components/dxScheduler/Interfaces/dxSchedulerAppointment/#startDateTimeZone) and [endDateTimeZone](/Documentation/ApiReference/UI_Components/dxScheduler/Interfaces/dxSchedulerAppointment/#endDateTimeZone) appointment properties).