Fix dead/broken links
Please fix the following link:
- on top of https://gstreamer.freedesktop.org/data/doc/gstreamer/1.14/gstreamer/html/ is a link called https://gstreamer.freedesktop.org/usr/share/gtk-doc/html/gstreamer-1.0/ which redirects to https://gstreamer.freedesktop.org/usr/share/gtk-doc/html/gstreamer-1.0/ which is non-existin