Update .NET version references in first-web-api.md to 9.0

Author: timdeschryver

aspnetcore/tutorials/first-web-api.md

@@ -38,11 +38,11 @@ The following diagram shows the design of the app.
 
 # [Visual Studio](#tab/visual-studio)
 
-[!INCLUDE[](~/includes/net-prereqs-vs-8.0.md)]
+[!INCLUDE[](~/includes/net-prereqs-vs-9.0.md)]
 
 # [Visual Studio Code](#tab/visual-studio-code)
 
-[!INCLUDE[](~/includes/net-prereqs-vsc-8.0.md)]
+[!INCLUDE[](~/includes/net-prereqs-vsc-9.0.md)]
 
 ---
 
@@ -55,7 +55,7 @@ The following diagram shows the design of the app.
 * Select the **ASP.NET Core Web API** template and select **Next**.
 * In the **Configure your new project dialog**, name the project *TodoApi* and select **Next**.
 * In the **Additional information** dialog:
-  * Confirm the **Framework** is **.NET 8.0 (Long Term Support)**.
+  * Confirm the **Framework** is **.NET 9.0 (Standard Term Support)**.
   * Confirm the checkbox for **Use controllers(uncheck to use minimal APIs)** is checked.
   * Confirm the checkbox for **Enable OpenAPI support** is checked.
   * Select **Create**.
@@ -502,5 +502,4 @@ For more information, see the following resources:
 :::moniker-end
 
 [!INCLUDE[](~/tutorials/first-web-api/includes/first-web-api7.md)]
-
-[!INCLUDE[](~/tutorials/first-web-api/includes/first-web-api8.md)]
+[!INCLUDE[](~/tutorials/first-web-api/includes/first-web-api8.md)]