Update SerializationException condition (#4599)

* update serializationexception condition

Author: gewarren

xml/System.Runtime.Serialization.Formatters.Binary/BinaryFormatter.xml

@@ -444,7 +444,13 @@
 
  -or-  
 
- The target type is a <see cref="T:System.Decimal" />, but the value is out of range of the <see cref="T:System.Decimal" /> type.</exception>
+The input stream does not represent a well-formed <see cref="T:System.Runtime.Serialization.Formatters.Binary.BinaryFormatter" /> serialized payload.
+          
+-or-
+          
+An error occurred while deserializing an object from the input stream.
+          
+The <see langword="InnerException" /> property may contain more information about the root cause.</exception>
         <exception cref="T:System.Security.SecurityException">The caller does not have the required permission.</exception>
       </Docs>
     </Member>