Update fragment_settings.xml

Adding note about changing server.

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

@@ -2,6 +2,7 @@
 <androidx.constraintlayout.widget.ConstraintLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:background="@drawable/background_home">
@@ -158,5 +159,17 @@
         android:layout_height="wrap_content"
         app:constraint_referenced_ids="loading_progress,loading_view" />
 
+    <TextView
+        android:id="@+id/serverChangeNote"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="48dp"
+        android:layout_marginTop="24dp"
+        android:layout_marginEnd="48dp"
+        android:text="NOTE: You must fully close and restart the app for a server change to take effect. Entering and updating a server here will cause that server to be set in encrypted preferences and used all the time, otherwise a random server is chosen by default on startup."
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/button_update" />
+
 
 </androidx.constraintlayout.widget.ConstraintLayout>