Updated mediawiki/extensions
Project: mediawiki/extensions/Parsoid  6d3e74c76ad867bfac28f8e4e2f3b3a6a9eb47e8

Fix HTML output in several places in ParserService.

* Emit base href in /_rt/ output of the server in api/.
  - /_rt/* urls had broken image display because of
    missing base href in the document header.

* Fix up missing closing tags in a few places.

* Added linebreaks in the output so the html seen via
  'View Source' is readable.

* Fixed and verified.

Change-Id: I72140a4b4f69f9982fb457768f7d904a2145735e