Migrate prepareDependencies details to swift-dependencies link (#35)

* Migrate prepareDependencies details to swift-dependencies link

* Update GRDBQueryKey.swift

---------

Co-authored-by: Stephen Celis <[email protected]>

Author: acosmicflamingo

Examples/GRDBDemo/GRDB/GRDBQueryKey.swift

@@ -56,10 +56,10 @@ extension DependencyValues {
         """
         A blank, in-memory database is being used for the app. To set the database that is used by \
         the 'grdbQuery' key you can use the 'prepareDependencies' tool as soon as your app \ 
-        launches, such as in the entry point:
-        
+        launches, such as in your app or scene delegate in UIKit, or the app entry point in SwiftUI:
+
             @main
-            struct EntryPoint: App {
+            struct MyApp: App {
               init() {
                 prepareDependencies {
                   $0.defaultDatabase = try! DatabaseQueue(/* ... */)