drm: fix typo in comment

Fix typo in a doxygen comment (replaced green by blue) in drm_color_mgmt.c
Signed-off-by: Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20220426131912.3850354-1-raphael.gallais-pou@foss.st.com

drivers/gpu/drm/drm_color_mgmt.c

@@ -259,7 +259,7 @@ static bool drm_crtc_supports_legacy_gamma(struct drm_crtc *crtc)
  * @crtc: CRTC object
  * @red: red correction table
  * @green: green correction table
- * @blue: green correction table
+ * @blue: blue correction table
  * @size: size of the tables
  * @ctx: lock acquire context
  *