Remove wrong XDOC tag (serilog#1699)

* Remove wrong tag

* fix

src/Serilog/Core/Enrichers/PropertyEnricher.cs

@@ -32,11 +32,9 @@ public class PropertyEnricher : ILogEventEnricher
         /// </summary>
         /// <param name="name">The name of the property.</param>
         /// <param name="value">The value of the property.</param>
-        /// <returns>A handle to later remove the property from the context.</returns>
         /// <param name="destructureObjects">If true, and the value is a non-primitive, non-array type,
         /// then the value will be converted to a structure; otherwise, unknown types will
         /// be converted to scalars, which are generally stored as strings.</param>
-        /// <returns></returns>
         /// <exception cref="ArgumentNullException">When <paramref name="name"/> is <code>null</code></exception>
         /// <exception cref="ArgumentException">When <paramref name="name"/> is empty or only contains whitespace</exception>
         public PropertyEnricher(string name, object value, bool destructureObjects = false)

src/Serilog/Core/ILogEventPropertyFactory.cs

@@ -1,4 +1,4 @@
-// Copyright 2013-2015 Serilog Contributors
+// Copyright 2013-2015 Serilog Contributors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -30,7 +30,7 @@ public interface ILogEventPropertyFactory
         /// <param name="destructureObjects">If true, and the value is a non-primitive, non-array type,
         /// then the value will be converted to a structure; otherwise, unknown types will
         /// be converted to scalars, which are generally stored as strings.</param>
-        /// <returns></returns>
+        /// <returns>Created <see cref="LogEventProperty"/> instance.</returns>
         LogEventProperty CreateProperty(string name, object value, bool destructureObjects = false);
     }
-}
+}