element-android/vector/src/main/res/values/config.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <!-- "app_name" is now defined in build.gradle -->

    <!-- server urls -->
    <string name="matrix_org_server_url" translatable="false">https://matrix.org</string>
    <string name="piwik_server_url" translatable="false">https://piwik.riot.im</string>
    <string name="bug_report_url" translatable="false">https://riot.im/bugreports/submit</string>

    <!--
        Pusher config for the application
        https://matrix.org/docs/spec/client_server/r0.4.0#id128
     -->

    <!-- Note: pusher_http_url should have path '/_matrix/push/v1/notify' -->
    <string name="pusher_http_url" translatable="false">https://matrix.org/_matrix/push/v1/notify</string>
    <!-- Note: pusher_app_id cannot exceed 64 chars -->
    <string name="pusher_app_id" translatable="false">im.vector.app.android</string>

    <string-array name="room_directory_servers" translatable="false">
        <item>matrix.org</item>
    </string-array>

</resources>