Fix comma typo

    <string name="keywords_imei_info">imei, meid, min, prl version, imei sv</string>

    <string name="keywords_sim_status">network, mobile network state, service state, signal strength, mobile network type, roaming, iccid</string>

    <string name="keywords_model_and_hardware">serial number, hardware version</string>

    <string name="keywords_android_version">android security patch level, baseband version, kernel version, </string>

    <string name="keywords_android_version">android security patch level, baseband version, kernel version</string>

    <!-- NFC Wi-Fi pairing/setup strings-->