tools: don't start lines with single quotes in man page
tools: don't start lines with single quotes in man page

When a line starts with a single quote it's treated in a special way by
man, which may result in paragraphs of the man page not rendered by the
man pager, so just avoid that.

A possible solution could have been to escape the singe quote with
a \(cq sequence but this is rather unreadable, instead the text has been
reformatted to have the problematic quoted 'ppc' string on the previous
line.

https://bugzilla.gnome.org/show_bug.cgi?id=773917

StreamUtils/gstreamer,StreamUtils/gstreamer,StreamUtils/gstreamer,StreamUtils/gstreamer,StreamUtils/gstreamer