Update introduction layout spacing

Bug: 130740990

Test: builds
Change-Id: I2c10d991097fcdb7eb0775f744b5b12af2597780
diff --git a/res/layout/face_enroll_introduction.xml b/res/layout/face_enroll_introduction.xml
index 900f378..5107bd8 100644
--- a/res/layout/face_enroll_introduction.xml
+++ b/res/layout/face_enroll_introduction.xml
@@ -45,14 +45,10 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content" />
 
-        <Space
-            android:layout_width="0dp"
-            android:layout_height="0dp"
-            android:layout_weight="1"/>
-
         <FrameLayout
             android:layout_width="match_parent"
-            android:layout_height="wrap_content">
+            android:layout_height="wrap_content"
+            android:layout_marginVertical="48dp">
 
             <com.google.android.setupdesign.view.IllustrationVideoView
                 android:id="@+id/illustration_normal"
@@ -71,18 +67,12 @@
 
         </FrameLayout>
 
-        <Space
-            android:layout_width="0dp"
-            android:layout_height="0dp"
-            android:layout_weight="1"/>
-
         <!-- Contains the buttons and extra information text at the bottom -->
         <LinearLayout
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:orientation="vertical"
-            android:layout_gravity="center_horizontal|bottom"
-            android:layout_marginTop="24dp">
+            android:layout_gravity="center_horizontal|bottom">
 
             <FrameLayout
                 android:layout_width="match_parent"
@@ -110,7 +100,8 @@
                 android:layout_height="wrap_content"
                 android:orientation="horizontal"
                 android:paddingStart="16dp"
-                android:paddingEnd="16dp">
+                android:paddingEnd="16dp"
+                android:layout_marginTop="24dp">
 
                 <ImageView
                     android:layout_width="wrap_content"