Finishes removal of Health endpoint from the tutorial.

Hummingbird.docc/Tutorials/Todos/Resources/code/API/todos-api-08.swift

@@ -6,9 +6,9 @@ func buildRouter() -> Router<AppRequestContext> {
         // logging middleware
         LogRequestsMiddleware(.info)
     }
-    // Add health endpoint
-    router.get("/health") { _, _ -> HTTPResponse.Status in
-        return .ok
+    // Add default endpoint
+    router.get("/") { _,_ in
+        return "Hello!"
     }
     router.addRoutes(TodoController(repository: TodoMemoryRepository()).endpoints, atPath: "/todos")
     return router

Hummingbird.docc/Tutorials/Todos/Resources/code/Postgres/todos-postgres-23.swift

@@ -6,9 +6,9 @@ func buildRouter(_ repository: some TodoRepository) -> Router<AppRequestContext>
         // logging middleware
         LogRequestsMiddleware(.info)
     }
-    // Add health endpoint
-    router.get("/health") { _, _ -> HTTPResponse.Status in
-        return .ok
+    // Add default endpoint
+    router.get("/") { _,_ in
+        return "Hello!"
     }
     router.addRoutes(TodoController(repository: repository).endpoints, atPath: "/todos")
     return router

Hummingbird.docc/Tutorials/Todos/Resources/code/Testing/todos-testing-02.swift

@@ -16,8 +16,8 @@ final class AppTests: XCTestCase {
         let args = TestArguments()
         let app = try await buildApplication(args)
         try await app.test(.router) { client in
-            try await client.execute(uri: "/health", method: .get) { response in
-                XCTAssertEqual(response.status, .ok)
+            try await client.execute(uri: "/", method: .get) { response in
+                XCTAssertEqual(response.body, ByteBuffer(string: "Hello!"))
             }
         }
     }

Hummingbird.docc/Tutorials/Todos/Todos-3-Testing.tutorial

@@ -13,13 +13,13 @@
             @Step {
                 Open Package.swift
 
-                You see at the bottom there is a test target call `AppTests`. It is dependent on the target `App` and the library `HummingbirdTesting`.
+                You see at the bottom there is a test target called `AppTests`. It is dependent on the target `App` and the library `HummingbirdTesting`.
                 @Code(name: "Package.swift", file: todos-testing-01.swift)
             }
             @Step {
                 Open Tests/AppTests/AppTests.swift
 
-                It contains one test, `testApp()`. This creates a copy of the Application using `buildApplication(_:)` and uses the Hummingbird test framework to verify the GET `/health` endpoint returns a 200 (Ok) response.
+                It contains one test, `testApp()`. This creates a copy of the Application using `buildApplication(_:)` and uses the Hummingbird test framework to verify the GET `/` endpoint returns a "Hello!" string.
                 @Code(name: "Tests/AppTests/AppTests.swift", file: todos-testing-02.swift)
             }
             @Step {