[mutter] core: Fix compiler warning in MetaSoundPlayer

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit f740e8ed79b4797d7995feb6ab16e1a939d63543
Author: Robert Mader <robert mader posteo de>
Date:   Tue Jan 8 21:01:45 2019 +0100

    core: Fix compiler warning in MetaSoundPlayer

 src/core/meta-sound-player.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/core/meta-sound-player.c b/src/core/meta-sound-player.c
index 319510a5b..ab934781a 100644
--- a/src/core/meta-sound-player.c
+++ b/src/core/meta-sound-player.c
@@ -222,7 +222,7 @@ build_ca_proplist (ca_proplist  *props,
 
 /**
  * meta_sound_player_play_from_theme:
- * @sound: a #MetaSoundPlayer
+ * @player: a #MetaSoundPlayer
  * @name: sound theme name of the event
  * @description: description of the event
  * @cancellable: cancellable for the request
@@ -256,7 +256,7 @@ meta_sound_player_play_from_theme (MetaSoundPlayer *player,
 
 /**
  * meta_sound_player_play_from_file:
- * @sound: a #MetaSoundPlayer
+ * @player: a #MetaSoundPlayer
  * @file: file to play
  * @description: description of the played sound
  * @cancellable: cancellable for the request