Adjust sources section heading padding

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

@@ -9,6 +9,7 @@
         android:id="@+id/recycler"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
+        android:layout_marginTop="4dp"
         tools:listitem="@layout/source_main_controller_card" />
 
     <eu.davidea.fastscroller.FastScroller

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

@@ -12,7 +12,6 @@
         android:paddingStart="@dimen/material_component_text_fields_padding_above_and_below_label"
         android:paddingTop="8dp"
         android:paddingEnd="@dimen/material_component_text_fields_padding_above_and_below_label"
-        android:paddingBottom="8dp"
         tools:text="Title" />
 
 </FrameLayout>