docs/about/emulation: Add documentation for hotblocks plugin arguments Currently just 'inline'. Signed-off-by: Alex Bradbury <asb@igalia.com> Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org> Link: https://lore.kernel.org/qemu-devel/35128cc5a86a0c18418f9d3150fb8771c54ef7d8.1753857212.git.asb@igalia.com Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>