Update 2-add-new-manifest.md

Author: darrenj

docs/_docs/skills/tutorials/migrate-to-new-skill/csharp/2-add-new-manifest.md

@@ -2,7 +2,7 @@
 layout: tutorial
 category: Skills
 subcategory: Migrate to GA Bot Framework Skills
-language: C#
+language: csharp
 title: Add a new manifest
 order: 2
 ---
@@ -90,4 +90,4 @@ This example manifest surfaces two `activities`. One that enables a users uttera
 
 1. Update `{YOUR_SKILL_APPID}` with the Active Directory AppID of your deployed Skill, you can find this within your `appSettings.json` file.
 
-1. Publish the changes to your Skill endpoint and validate that you can retrieve the manifest using the browser (`/manifest/manifest.json`)
+1. Publish the changes to your Skill endpoint and validate that you can retrieve the manifest using the browser (`/manifest/manifest.json`)