Update samples (#762)

Update tfm and package ref.

Author: MarcoRossignoli

Documentation/Examples/MSBuild/MergeWith/MergeWith.sln

@@ -3,22 +3,22 @@ Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 16
 VisualStudioVersion = 16.0.29230.61
 MinimumVisualStudioVersion = 15.0.26124.0
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ClassLibrary1", "ClassLibrary1\ClassLibrary1.csproj", "{4B6E5DCB-C16F-4880-AA97-BC5D01959E49}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ClassLibrary1", "ClassLibrary1\ClassLibrary1.csproj", "{4B6E5DCB-C16F-4880-AA97-BC5D01959E49}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "XUnitTestProject1", "XUnitTestProject1\XUnitTestProject1.csproj", "{39597E4B-23B4-4A6A-A71B-FFBE131A94D6}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "XUnitTestProject1", "XUnitTestProject1\XUnitTestProject1.csproj", "{39597E4B-23B4-4A6A-A71B-FFBE131A94D6}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ClassLibrary2", "ClassLibrary2\ClassLibrary2.csproj", "{973ECB19-5301-4191-9D93-3BEC9D2FCCF6}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ClassLibrary2", "ClassLibrary2\ClassLibrary2.csproj", "{973ECB19-5301-4191-9D93-3BEC9D2FCCF6}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "XUnitTestProject2", "XUnitTestProject2\XUnitTestProject2.csproj", "{6ED65535-CCC9-438E-80D4-1598FB572512}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "XUnitTestProject2", "XUnitTestProject2\XUnitTestProject2.csproj", "{6ED65535-CCC9-438E-80D4-1598FB572512}"
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{5F5E20F4-E34C-48BB-906D-65CF1B55A6AA}"
 	ProjectSection(SolutionItems) = preProject
-		MergeWith.md = MergeWith.md
+		HowTo.md = HowTo.md
 	EndProjectSection
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ClassLibrary3", "ClassLibrary3\ClassLibrary3.csproj", "{2443A7B5-99D5-40EA-9501-CCE80FC8951A}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ClassLibrary3", "ClassLibrary3\ClassLibrary3.csproj", "{2443A7B5-99D5-40EA-9501-CCE80FC8951A}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "XUnitTestProject3", "XUnitTestProject3\XUnitTestProject3.csproj", "{FE26E5E2-B692-4FF2-86BE-E3E3DC44DA23}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "XUnitTestProject3", "XUnitTestProject3\XUnitTestProject3.csproj", "{FE26E5E2-B692-4FF2-86BE-E3E3DC44DA23}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution

Documentation/Examples/MSBuild/MergeWith/XUnitTestProject1/XUnitTestProject1.csproj

@@ -1,17 +1,16 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp2.0</TargetFramework>
-
+    <TargetFramework>netcoreapp3.1</TargetFramework>
     <IsPackable>false</IsPackable>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="coverlet.msbuild" Version="2.6.3">
+    <PackageReference Include="coverlet.msbuild" Version="2.8.0">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.2.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.5.0" />
     <PackageReference Include="xunit" Version="2.4.0" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.0" />
   </ItemGroup>

Documentation/Examples/MSBuild/MergeWith/XUnitTestProject2/XUnitTestProject2.csproj

@@ -1,17 +1,16 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp2.0</TargetFramework>
-
+    <TargetFramework>netcoreapp3.1</TargetFramework>
     <IsPackable>false</IsPackable>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="coverlet.msbuild" Version="2.6.3">
+    <PackageReference Include="coverlet.msbuild" Version="2.8.0">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.2.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.5.0" />
     <PackageReference Include="xunit" Version="2.4.0" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.0" />
   </ItemGroup>

Documentation/Examples/MSBuild/MergeWith/XUnitTestProject3/XUnitTestProject3.csproj

@@ -1,17 +1,16 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp2.0</TargetFramework>
-
+    <TargetFramework>netcoreapp3.1</TargetFramework>
     <IsPackable>false</IsPackable>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="coverlet.msbuild" Version="2.6.3">
+    <PackageReference Include="coverlet.msbuild" Version="2.8.0">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.2.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.5.0" />
     <PackageReference Include="xunit" Version="2.4.0" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.0" />
   </ItemGroup>

Documentation/Examples/VSTest/HelloWorld/XUnitTestProject1/XUnitTestProject1.csproj

@@ -1,17 +1,15 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp2.0</TargetFramework>
-
+    <TargetFramework>netcoreapp3.1</TargetFramework>
     <IsPackable>false</IsPackable>
   </PropertyGroup>
 
   <ItemGroup>
-    <!--To update with official release when will be available-->
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.5.0-preview-20191115-01" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.5.0" />
     <PackageReference Include="xunit" Version="2.4.0" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.0" />
-    <PackageReference Include="coverlet.collector" Version="1.1.0">
+    <PackageReference Include="coverlet.collector" Version="1.2.0">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>