[libgrss] feeds-group: Fix typos at _export_file doc text

[Felipe Borges <felipeborges src gnome org>]

commit 971c421dc26400e933de60b71eea0335a9ba2693
Author: Felipe Borges <felipeborges gnome org>
Date:   Mon Feb 27 16:11:53 2017 +0100

    feeds-group: Fix typos at _export_file doc text
    
    https://bugzilla.gnome.org/show_bug.cgi?id=779316

 src/feeds-group.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/feeds-group.c b/src/feeds-group.c
index b057aeb..127a9ce 100644
--- a/src/feeds-group.c
+++ b/src/feeds-group.c
@@ -237,8 +237,8 @@ grss_feeds_group_parse_file (GrssFeedsGroup *group, const gchar *path, GError **
  * @uri: URI of the file to write.
  * @error: location for eventual errors.
  *
- * Creates a new file with the list of @channels rappresented in the required
- * @format. It a file already exists at the @uri location, it is overwritten.
+ * Creates a new file with the list of @channels represented in the required
+ * @format. If the file already exists at the @uri location, it is overwritten.
  *
  * Returns: %TRUE if the file is created correctly, or %FALSE if an error
  * occours and @error is set.