conversations-classic/src/main/res/layout/activity_about.xml

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    tools:context="eu.siacs.conversations.ui.AboutActivity"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <TextView
        android:text="@string/pref_about_message"
        android:autoLink="web"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:linksClickable="true" />

</ScrollView>