change nullable elements (#1531)

BillWagner · web-flow · commit eb2ec4e887ef · 2019-09-21T15:30:53.000-04:00
It was NullableContextOptions. It's now Nullable. Related to #1528
diff --git a/csharp/tutorials/nullable-reference-migration/finished/SimpleFeedReader.Tests/SimpleFeedReader.Tests.csproj b/csharp/tutorials/nullable-reference-migration/finished/SimpleFeedReader.Tests/SimpleFeedReader.Tests.csproj
@@ -2,7 +2,7 @@
   <PropertyGroup>
     <TargetFramework>netcoreapp2.1</TargetFramework>
     <LangVersion>8.0</LangVersion>
-    <NullableContextOptions>enable</NullableContextOptions>
+    <Nullable>enable</Nullable>
     <IsPackable>false</IsPackable>
   </PropertyGroup>
   <ItemGroup>
