Fix some of the lint warnigns

Change-Id: I437e41c646b4edd81ef9ba05a303bdfc232d0f94
diff --git a/app/src/main/res/layout/fragment_main.xml b/app/src/main/res/layout/fragment_main.xml
index b0d48f1..2fc1654 100644
--- a/app/src/main/res/layout/fragment_main.xml
+++ b/app/src/main/res/layout/fragment_main.xml
@@ -7,7 +7,7 @@
   <LinearLayout
       style="@style/default_linear_layout_padding"
       android:layout_width="match_parent"
-      android:layout_height="match_parent"
+      android:layout_height="wrap_content"
       android:orientation="vertical"
       >