Update missions_header.xml

make the separator line """"""""simetric""""""""""

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

@@ -4,8 +4,8 @@
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="30dp"
-    android:layout_marginRight="16dp"
-    android:layout_marginEnd="16dp"
+    android:layout_marginRight="8dp"
+    android:layout_marginEnd="8dp"
     android:layout_marginTop="16dp"
     android:orientation="vertical"
     android:layout_marginLeft="8dp"