In the commit d661611d08 ("docs/markdown: Switch to using pandoc, and
fix underscore escaping"), the documentation suffix was changed from
".markdown" to ".pandoc"; however, the reference was missed to update.
This patch updates the documentation name to xen-command-line.pandoc.
Fixes: d661611d08 ("docs/markdown: Switch to using pandoc, and fix underscore escaping")
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>