Updated wsd11elementidentifers

At
http://dev.w3.org/cvsweb/~checkout~/2006/ws/policy/wsdl11elementidentifi
ers.html 

I did a bunch of the updates that were mentioned in the meeting:

1. added mention of diff from wsdl2.0 component ids vs element ids
2. moved example URIs into sample doc
3. fixed typos in table

Cheers,
Dave