use tools attribute for AS rendering close to real data

src/main/res/layout/version_list_item.xml

@@ -60,7 +60,7 @@
             android:layout_height="0dp"
             android:layout_weight="1"
             android:ellipsize="end"
-            android:text="@string/placeholder_sentence"
+            tools:text="256 KB"
             android:textColor="?android:attr/textColorSecondary"/>
     </LinearLayout>