[MINOR] Added fill viewport property to take full height.

On large tablet you could still see empty space at the bottom.

Author: hossain-khan

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

@@ -19,10 +19,12 @@
     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="match_parent"
+    android:fillViewport="true">
 
     <!--
-        NOTE: This is a complete demo of a video details view using `ConstraintLayout` and flat view hierarchy.
+        NOTE: This is a complete demo of a video details view
+        using `ConstraintLayout` and flat view hierarchy.
     -->
     <androidx.constraintlayout.widget.ConstraintLayout
         android:layout_width="match_parent"
@@ -351,7 +353,7 @@
         <!-- Empty view to take extra space at the end for scrolling -->
         <View
             android:layout_width="0dp"
-            android:layout_height="100dp"
+            android:layout_height="24dp"
             android:visibility="visible"
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"