docs: rewrite one attribute description in R.attr

            <enum name="viewEnd" value="6" />

        </attr>

        <!-- Controls how this View is important for accessibility which is if it fires

             accessibility events and if it is reported to accessibility services that

             query the screen. Note: While not recommended, an accessibility service may

             decide to ignore this attribute and operate on all views in the view tree. -->

        <!-- Describes whether or not this view is important for accessibility.

             If it is important, the view fires accessibility events and is

             reported to accessibility services that query the screen. Note:

             While not recommended, an accessibility service may decide to

             ignore this attribute and operate on all views in the view tree. -->

        <attr name="importantForAccessibility" format="integer">

            <!-- The system determines whether the view is important for accessibility - default

                 (recommended). -->