Added additional information to the coverage report related to the roles, properties and states in the example source code and the documentation sections

As a part of trying to improve the quality assurance of the reference table and coverage report, and since we are now using the "node-html-parser" to make it easier to query specific section of each example.  I thought it would be interesting to look at the roles, properties and states in the actual example source code and compare it to the information on the documentation tables.   The results show several discrepancies between the two for many examples.  So we probably need to review this information to determine if example documentation needs to be updated, or some types of ARIA features do not need documentation.

Updated draft coverage report:
https://raw.githack.com/w3c/aria-practices/update-example-index/coverage/index.html#example_coding_practices

Jon


Jon Gunderson, Ph.D., CPWA (he/him/his)
Coordinator of Accessible IT Group
University of Illinois at Urbana/Champaign
1207 S. Oak Street
Champaign, IL 61820

Phone: (217) 244-5870
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