Updated runtime identifiers

Author: kichalla

samples/MusicStore/MusicStore.csproj

@@ -7,7 +7,7 @@
     <TargetFrameworks>net46;netcoreapp2.0</TargetFrameworks>
     <DefineConstants>$(DefineConstants);DEMO</DefineConstants>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
-    <RuntimeIdentifiers>win7-x86;win7-x64;linux-x64;osx.10.12-x64</RuntimeIdentifiers>
+    <RuntimeIdentifiers>win-x86;win-x64;linux-x64;osx-x64</RuntimeIdentifiers>
   </PropertyGroup>
 
   <ItemGroup>