Reduce the number of parallel jobs for documentation build since we use GH-hosted runner with only 4 vCPUs and 16GiB of RAM. Signed-off-by: Benjamin Cabé <benjamin@zephyrproject.org>
Reduce the number of parallel jobs for documentation build since we use GH-hosted runner with only 4 vCPUs and 16GiB of RAM. Signed-off-by: Benjamin Cabé <benjamin@zephyrproject.org>