Update NrbfDecoder.xml

Author: gewarren

xml/System.Formats.Nrbf/NrbfDecoder.xml

@@ -25,7 +25,7 @@
   </Attributes>
   <Docs>
     <summary>
-            Provides stateless methods for decoding .NET Remoting Binary Format (NRBF) encoded data.
+            Provides stateless methods for decoding .NET Remoting Binary Format (NRBF) encoded data.Test
             </summary>
     <remarks>To be added.</remarks>
   </Docs>