Add Release notes for 6.1 release (#5327)

Author: HongGit

release-notes/System.ServiceModel.Federation.md

@@ -8,6 +8,11 @@
 
 ## Version History
 
+### 6.1.0
+
+* [NuGet Package](https://www.nuget.org/packages/System.ServiceModel.Federation/6.1.0)
+* [Release tag](https://github.com/dotnet/wcf/releases/tag/v6.1.0-rtm)
+
 ### 6.0.0
 
 * [NuGet Package](https://www.nuget.org/packages/System.ServiceModel.Federation/6.0.0)

release-notes/System.ServiceModel.Http.md

@@ -8,6 +8,11 @@
 
 ## Version History
 
+### 6.1.0
+
+* [NuGet Package](https://www.nuget.org/packages/System.ServiceModel.Http/6.1.0)
+* [Release tag](https://github.com/dotnet/wcf/releases/tag/v6.1.0-rtm)
+
 ### 6.0.0
 
 * [NuGet Package](https://www.nuget.org/packages/System.ServiceModel.Http/6.0.0)

release-notes/System.ServiceModel.NetFramingBase.md

@@ -8,6 +8,11 @@
 
 ## Version History
 
+### 6.1.0
+
+* [NuGet Package](https://www.nuget.org/packages/System.ServiceModel.NetFramingBase/6.1.0)
+* [Release tag](https://github.com/dotnet/wcf/releases/tag/v6.1.0-rtm)
+
 ### 6.0.0
 
 * [NuGet Package](https://www.nuget.org/packages/System.ServiceModel.NetFramingBase/6.0.0)

release-notes/System.ServiceModel.NetNamedPipe.md

@@ -8,6 +8,11 @@
 
 ## Version History
 
+### 6.1.0
+
+* [NuGet Package](https://www.nuget.org/packages/System.ServiceModel.NetNamedPipe/6.1.0)
+* [Release tag](https://github.com/dotnet/wcf/releases/tag/v6.1.0-rtm)
+
 ### 6.0.0
 
 * [NuGet Package](https://www.nuget.org/packages/System.ServiceModel.NetNamedPipe/6.0.0)

release-notes/System.ServiceModel.NetTcp.md

@@ -8,6 +8,11 @@
 
 ## Version History
 
+### 6.1.0
+
+* [NuGet Package](https://www.nuget.org/packages/System.ServiceModel.NetTcp/6.1.0)
+* [Release tag](https://github.com/dotnet/wcf/releases/tag/v6.1.0-rtm)
+
 ### 6.0.0
 
 * [NuGet Package](https://www.nuget.org/packages/System.ServiceModel.NetTcp/6.0.0)

release-notes/System.ServiceModel.Primitives.md

@@ -8,6 +8,11 @@
 
 ## Version History
 
+### 6.1.0
+
+* [NuGet Package](https://www.nuget.org/packages/System.ServiceModel.Primitives/6.1.0)
+* [Release tag](https://github.com/dotnet/wcf/releases/tag/v6.1.0-rtm)
+
 ### 6.0.0
 
 * [NuGet Package](https://www.nuget.org/packages/System.ServiceModel.Primitives/6.0.0)

release-notes/System.Web.Services.Description.md

@@ -8,6 +8,11 @@
 
 ## Version History
 
+### 6.1.0
+
+* [NuGet Package](https://www.nuget.org/packages/System.Web.Services.Description/6.1.0)
+* [Release tag](https://github.com/dotnet/wcf/releases/tag/v6.1.0-rtm)
+
 ### 6.0.0
 
 * [NuGet Package](https://www.nuget.org/packages/System.Web.Services.Description/6.0.0)