Web Services Description Language (WSDL) Version 2.0 Part 1: Core Language - Grammatical Error

There is a grammatical error on the following page:

http://www.w3.org/TR/wsdl20/

 

The statement:

Since Z Notation is not widely known, it is not included the normative
version of this specification.

 

Should be:

Since Z Notation is not widely known, it is not included in the
normative version of this specification.

 

Regards,

Jeff