move to PackageLicenseExpression

Author: SimonCropp

src/Serilog.AspNetCore/Serilog.AspNetCore.csproj

@@ -15,7 +15,7 @@
     <PackageTags>serilog;aspnet;aspnetcore</PackageTags>
     <PackageIconUrl>http://serilog.net/images/serilog-extension-nuget.png</PackageIconUrl>
     <PackageProjectUrl>https://github.com/serilog/serilog-aspnetcore</PackageProjectUrl>
-    <PackageLicenseUrl>http://www.apache.org/licenses/LICENSE-2.0</PackageLicenseUrl>
+    <PackageLicenseExpression>Apache-2.0</PackageLicenseExpression>
     <RepositoryUrl>https://github.com/serilog/serilog-aspnetcore</RepositoryUrl>
     <RepositoryType>git</RepositoryType>
     <GenerateAssemblyVersionAttribute>false</GenerateAssemblyVersionAttribute>