Trying to comply with GStreamer's element names, this patch renames the
encoders using the name format vaapi{codec}enc.
In this way, the plugin documentation is linked correctly.
Signed-off-by: Víctor Manuel Jáquez Leal <victorx.jaquez@intel.com>
Our auto-generated documentation has been a bit neglected. This patch replaces
the 'normal' gtk-doc with the one used in GStreamer, which is adapted for
plugins, elements and libraries.
This patch also re-enables documentation generation.
Signed-off-by: Víctor Manuel Jáquez Leal <victorx.jaquez@intel.com>