Fix build errors

Author: dacharyc

source/frameworks/swiftui/background-sync.txt

@@ -165,7 +165,7 @@ If you're following along with the Template App, you can add this
 This background task first checks that your app has a logged-in user. If so, 
 it sets a :swift-sdk:`.flexibleSyncConfiguration 
 <Extensions/User.html#/s:So7RLMUserC10RealmSwiftE25flexibleSyncConfiguration15clientResetMode20initialSubscriptions11rerunOnOpenAC0B0V0F0VAC06ClienthI0O_yAC0E15SubscriptionSetVcSbtF>` 
-with a :ref:`subscription <swift-manage-flexible-sync-subscriptions>` the
+with a :ref:`subscription <sdks-manage-sync-subscriptions>` the
 app can use to sync the realm. 
 
 This is the same configuration used in the Template App's ``ContentView``. 

source/frameworks/swiftui/configure-and-open-database.txt

@@ -27,13 +27,13 @@ SwiftUI-friendly way.
 
 You can:
 
-- :ref:`Implicitly open a database <ios-open-realm-with-configuration-swiftui>` 
+- :ref:`Implicitly open a database <swiftui-open-database-with-configuration>` 
   with a ``defaultConfiguration`` or specify a different configuration. 
   This works for both non-synced and synced databases.
 - :ref:`Always download changes before opening a synced database 
-  <swiftui-async-open-synced-realm>`, which times out when the user is offline.
+  <swiftui-async-open-synced-database>`, which times out when the user is offline.
 - :ref:`Open a synced database even when a user is offline 
-  <swiftui-auto-open-synced-realm>`. The database may lack the most recent data.
+  <swiftui-auto-open-synced-database>`. The database may lack the most recent data.
 
 .. _swiftui-open-database-with-configuration:
 
@@ -79,15 +79,13 @@ The main difference between these property wrappers is whether the user
 must be online:
 
 - To download updates from your Atlas App Services app before opening a database,
-  use the :ref:`@AsyncOpen <swiftui-async-open-synced-realm>` property wrapper.
+  use the :ref:`@AsyncOpen <_swiftui-async-open-synced-database>` property wrapper.
   This requires the user to have a network connection. 
 - To open a synced database regardless of whether the user has a network 
-  connection, use the :ref:`@AutoOpen <swiftui-auto-open-synced-realm>` 
+  connection, use the :ref:`@AutoOpen <swiftui-auto-open-synced-database>` 
   property wrapper. This property wrapper enables developers to design 
   offline-first capabilities into their apps.
 
-.. include:: /includes/tip-swift-migrate-to-flexible-sync.rst
-
 .. _swiftui-async-open-synced-database:
 
 Download Changes Before Opening a Synced Database