Merge "Correct the string relate to volume shortcut keys." into rvc-dev

    <!-- Title for the accessibility tutorial dialog in accessibility service with button. [CHAR LIMIT=50] -->

    <string name="accessibility_tutorial_dialog_title_button">Use accessibility button to open</string>

    <!-- Title for the accessibility tutorial dialog in accessibility service with volume keys. [CHAR LIMIT=50] -->

    <string name="accessibility_tutorial_dialog_title_volume">Hold volume key to open</string>

    <string name="accessibility_tutorial_dialog_title_volume">Hold volume keys to open</string>

    <!-- Title for the accessibility tutorial dialog in accessibility service with triple tap. [CHAR LIMIT=100] -->

    <string name="accessibility_tutorial_dialog_title_triple">Triple tap screen to open</string>

    <!-- Title for the accessibility tutorial dialog in accessibility service with gesture. [CHAR LIMIT=50] -->