drm/doc: Fix comment typo

Replace apprpriately with appropriately.

Fixes: 1e4d84c6 ("drm/doc: Polish plane composition property docs")
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Cc: Maxime Ripard <maxime@cerno.tech>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: Simon Ser <contact@emersion.fr>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Simon Ser <contact@emersion.fr>
Reviewed-by: Simon Ser <contact@emersion.fr>
Link: https://patchwork.freedesktop.org/patch/msgid/20220628003407.77765-1-marex@denx.de

drivers/gpu/drm/drm_blend.c

@@ -80,7 +80,7 @@
  *
  * Note that the source rectangle must fully lie within the bounds of the
  * &drm_framebuffer. The destination rectangle can lie outside of the visible
- * area of the current mode of the CRTC. It must be apprpriately clipped by the
+ * area of the current mode of the CRTC. It must be appropriately clipped by the
  * driver, which can be done by calling drm_plane_helper_check_update(). Drivers
  * are also allowed to round the subpixel sampling positions appropriately, but
  * only to the next full pixel. No pixel outside of the source rectangle may