[Serialization] IBM-SE-002: Bugs in example

Serialization Section 2, "Serializing Arbitrary Data Models": The note at 
the end of this section contains code that is too wide to print. Also, the 
XQuery expression in this node will not parse because it has no 
parentheses around the conditional part of the if-expression. This note 
should be edited as necessary because of the "documentization" process 
described above. The resulting code should be checked for validity and 
broken into lines of suitable length.

--Don Chamberlin