[grilo-plugins] thetvdb: fix typo

[Juan A. Suarez Romero <jasuarez src gnome org>]

commit 8f2cb8a65133301d2119ac2f91b373ee9e7a9a44
Author: Alberto Garcia <berto igalia com>
Date:   Sat Jun 20 16:11:56 2015 +0300

    thetvdb: fix typo

 src/thetvdb/grl-thetvdb.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/thetvdb/grl-thetvdb.c b/src/thetvdb/grl-thetvdb.c
index f8ef814..71578cc 100644
--- a/src/thetvdb/grl-thetvdb.c
+++ b/src/thetvdb/grl-thetvdb.c
@@ -248,7 +248,7 @@ grl_thetvdb_plugin_register_keys (GrlRegistry *registry,
 
   spec = g_param_spec_string ("thetvdb-guest-stars",
                               "thetvdb-guest-stars",
-                              "Guest stars perfoming in the episode.",
+                              "Guest stars performing in the episode.",
                               NULL,
                               G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE),
   GRL_THETVDB_METADATA_KEY_GUEST_STARS =