Merge pull request #22 from gravity-api/stage

update pipeline

Author: gravity-api

azure-pipelines-csharp.yml

@@ -99,7 +99,7 @@ steps:
 - task: GitHubRelease@1
   displayName: 'create GitHub tag'
   inputs:
-    gitHubConnection: 'GitHub connection - Gravity API'
+    gitHubConnection: 'github.com'
     repositoryName: 'gravity-api/gravity-core'
     action: 'create'
     target: '$(Build.SourceVersion)'