[grilo] docs: Fix documentation typo

[Victor Toso <victortoso src gnome org>]

commit dc2e7d0fe8a5e9c2327cfa98d53abd876def2799
Author: Thiago Mendes <thiago posteo de>
Date:   Fri Sep 28 13:43:46 2018 +0200

    docs: Fix documentation typo
    
    Change it from contaddiner to container. This text is used to generate
     part of the Grilo docs

 src/grl-metadata-key.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/grl-metadata-key.h b/src/grl-metadata-key.h
index 0fa160a..c5b8935 100644
--- a/src/grl-metadata-key.h
+++ b/src/grl-metadata-key.h
@@ -48,7 +48,7 @@ typedef guint32 GrlKeyID;
  * @GRL_MEDIA_TYPE_AUDIO: audio media
  * @GRL_MEDIA_TYPE_VIDEO: video media
  * @GRL_MEDIA_TYPE_IMAGE: image media
- * @GRL_MEDIA_TYPE_CONTAINER: contaddiner media
+ * @GRL_MEDIA_TYPE_CONTAINER: container media
  */
 typedef enum {
   GRL_MEDIA_TYPE_UNKNOWN,