Original commit message from CVS:
* docs/manual/advanced-dparams.xml:
describe controller
* docs/manual/advanced-position.xml:
* docs/manual/basics-init.xml:
* docs/manual/manual.xml:
* docs/manual/titlepage.xml:
* docs/pwg/pwg.xml:
* docs/pwg/titlepage.xml:
cleanup xml (more to come)
* libs/gst/controller/gstcontroller.c:
fix typo