drm: fix kernel-doc warnings for SCALING_FILTER

This patch fixes the following kernel-doc warnings:

    /home/simon/src/linux/Documentation/gpu/drm-kms:466: ./drivers/gpu/drm/drm_crtc.c:236: WARNING: Unexpected indentation.
    /home/simon/src/linux/Documentation/gpu/drm-kms:466: ./drivers/gpu/drm/drm_crtc.c:237: WARNING: Block quote ends without a blank line; unexpected unindent.
    /home/simon/src/linux/Documentation/gpu/drm-kms:472: ./drivers/gpu/drm/drm_blend.c:203: WARNING: Unexpected indentation.
    /home/simon/src/linux/Documentation/gpu/drm-kms:472: ./drivers/gpu/drm/drm_blend.c:204: WARNING: Block quote ends without a blank line; unexpected unindent.
Signed-off-by: Simon Ser <contact@emersion.fr>
Fixes: 5c759eda ("drm: Introduce plane and CRTC scaling filter properties")
Cc: Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Uma Shankar <uma.shankar@intel.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/zJEUxNx4GwiY4FnqlVsuXdAWuH624SQ9VfN54NeH5E@cp7-web-043.plabs.ch

drivers/gpu/drm/drm_blend.c

@@ -196,10 +196,10 @@
  * exposed and assumed to be black).
  *
  * SCALING_FILTER:
- *
  *     Indicates scaling filter to be used for plane scaler
  *
  *     The value of this property can be one of the following:
+ *
  *     Default:
  *             Driver's default scaling filter
  *     Nearest Neighbor:

drivers/gpu/drm/drm_crtc.c

@@ -233,11 +233,11 @@ struct dma_fence *drm_crtc_create_fence(struct drm_crtc *crtc)
  * 	Atomic property for setting the scaling filter for CRTC scaler
  *
  * 	The value of this property can be one of the following:
+ *
  * 	Default:
  * 		Driver's default scaling filter
  * 	Nearest Neighbor:
  * 		Nearest Neighbor scaling filter
- *
  */
 
 /**