Syncronise content of all occurances of sample.xml and document-v20.xml

XML Files below need synchronizing with latest version of fresh-sites sample.xml.

forrest\whiteboard\multipleSites\subsite-secondSeed\src\documentation\content\xdocs\samples1\sample.xml
forrest\whiteboard\multipleSites\subsite-seed\src\documentation\content\xdocs\samples1\sample.xml
forrest\whiteboard\forrest2\core\src\examples\forrest1SeedSite\build\xdocs\samples\sample.xml
forrest\whiteboard\forrest2\core\src\examples\forrest1SeedSite\src\xdocs\samples\sample.xml

forrest\site-author\content\xdocs\dtdx\document-v20.xml
forrest\examples\contentIntegration\src\documentation\content\xdocs\samples\document-v20.xml

Need to sync with changes from r728861, r734317, r738804