Fixes #1864 - made about page scrollable (#1865)

app/src/main/res/layout/fragment_about.xml

@@ -2,11 +2,15 @@
 <!-- This Source Code Form is subject to the terms of the Mozilla Public
    - License, v. 2.0. If a copy of the MPL was not distributed with this
    - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="fill_parent"
+    android:layout_height="fill_parent">
+
     <androidx.constraintlayout.widget.ConstraintLayout
         xmlns:android="http://schemas.android.com/apk/res/android"
         xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools"
         android:layout_width="match_parent"
-    android:layout_height="match_parent"
+        android:layout_height="wrap_content"
         tools:context="org.mozilla.fenix.settings.AboutFragment">
 
         <ImageView
@@ -57,3 +61,5 @@
             android:textAlignment="center" />
 
     </androidx.constraintlayout.widget.ConstraintLayout>
+
+</ScrollView>