Clarify the call redirection/screening role strings

    <!-- Short label for the call redirection role. [CHAR LIMIT=30] -->

    <string name="role_call_redirection_short_label">Call redirecting app</string>

    <!-- Description for the call redirection role. [CHAR LIMIT=NONE] -->

    <string name="role_call_redirection_description">Apps that allow you to forward calls to another phone number</string>

    <string name="role_call_redirection_description">Apps that allow you to forward outgoing calls to another phone number</string>

    <!-- Template for the title when an app requests to become the default call redirection app. [CHAR LIMIT=100] -->

    <string name="role_call_redirection_request_title">Set <xliff:g id="app_name" example="Super Call Redirection">%1$s</xliff:g> as your default call redirection app?</string>

    <!-- Description when an app requests to become the default call redirection app. [CHAR LIMIT=60] -->

    <!-- Short label for the call screening role. [CHAR LIMIT=30] -->

    <string name="role_call_screening_short_label">Caller ID &amp; spam app</string>

    <!-- Description for the call screening role. [CHAR LIMIT=NONE] -->

    <string name="role_call_screening_description">Apps that allow you to identify incoming calls, block spam and robocalls, blacklist unwanted numbers, and so on</string>

    <string name="role_call_screening_description">Apps that allow you to identify calls, block spam and robocalls, and blacklist unwanted numbers</string>

    <!-- Template for the title when an app requests to become the default call screening app. [CHAR LIMIT=100] -->

    <string name="role_call_screening_request_title">Set <xliff:g id="app_name" example="Super Call Screening">%1$s</xliff:g> as your default caller ID &amp; spam app?</string>

    <!-- Description when an app requests to become the default call screening app. [CHAR LIMIT=60] -->