lavu/film_grain_params: fix typo in type enum

Ref: xkcd #1015

libavcodec/libdav1d.c

@@ -406,7 +406,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
             goto fail;
         }
 
-        fgp->type = AV_FILM_GRAM_PARAMS_AV1;
+        fgp->type = AV_FILM_GRAIN_PARAMS_AV1;
         fgp->seed = p->frame_hdr->film_grain.data.seed;
         fgp->codec.aom.num_y_points = p->frame_hdr->film_grain.data.num_y_points;
         fgp->codec.aom.chroma_scaling_from_luma = p->frame_hdr->film_grain.data.chroma_scaling_from_luma;

libavutil/film_grain_params.h

@@ -22,12 +22,12 @@
 #include "frame.h"
 
 enum AVFilmGrainParamsType {
-    AV_FILM_GRAM_PARAMS_NONE = 0,
+    AV_FILM_GRAIN_PARAMS_NONE = 0,
 
     /**
      * The union is valid when interpreted as AVFilmGrainAOMParams (codec.aom)
      */
-    AV_FILM_GRAM_PARAMS_AV1,
+    AV_FILM_GRAIN_PARAMS_AV1,
 };
 
 /**