Reformat file transfer fragment layout.

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

@@ -12,7 +12,7 @@
             app:layout_constraintLeft_toLeftOf="parent"
             app:layout_constraintRight_toRightOf="parent"
             app:layout_constraintTop_toTopOf="parent"
-            android:text="@string/file_transfer_button_pick_file" />
+            android:text="@string/file_transfer_button_pick_file"/>
 
     <TextView
             android:id="@+id/label_selected"
@@ -23,7 +23,7 @@
             app:layout_constraintLeft_toLeftOf="parent"
             app:layout_constraintRight_toRightOf="parent"
             app:layout_constraintTop_toBottomOf="@id/button_pick_file"
-            android:text="@string/file_transfer_label_no_file_selected" />
+            android:text="@string/file_transfer_label_no_file_selected"/>
 
     <Button
             android:id="@+id/button_start_stop_transfer"
@@ -42,7 +42,7 @@
             android:layout_marginTop="@dimen/send_label_margin"
             app:layout_constraintLeft_toLeftOf="parent"
             app:layout_constraintRight_toRightOf="parent"
-            app:layout_constraintTop_toBottomOf="@id/button_start_stop_transfer" />
+            app:layout_constraintTop_toBottomOf="@id/button_start_stop_transfer"/>
 
     <ProgressBar
             android:id="@+id/progress"
@@ -53,6 +53,6 @@
             android:layout_marginTop="@dimen/send_label_margin"
             app:layout_constraintLeft_toLeftOf="parent"
             app:layout_constraintRight_toRightOf="parent"
-            app:layout_constraintTop_toBottomOf="@id/label_status" />
+            app:layout_constraintTop_toBottomOf="@id/label_status"/>
 
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file