[folks] Use correct @return instead of @returns (which breaks valadoc)

[Travis Reitter <treitter src gnome org>]

commit 1db949c7d168209f2f09ba017a72ecb12f4fe278
Author: Travis Reitter <travis reitter collabora co uk>
Date:   Thu Jun 6 17:08:19 2013 -0700

    Use correct @return instead of @returns (which breaks valadoc)

 backends/ofono/ofono-backend.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/backends/ofono/ofono-backend.vala b/backends/ofono/ofono-backend.vala
index b4cb634..1410917 100644
--- a/backends/ofono/ofono-backend.vala
+++ b/backends/ofono/ofono-backend.vala
@@ -245,7 +245,7 @@ public class Folks.Backends.Ofono.Backend : Folks.Backend
    * Utility function to extract a modem's alias from its properties.
    *
    * @param properties, the properties of the modem.
-   * @returns the alias to use for this modem.
+   * @return the alias to use for this modem.
    */
   private string _modem_alias (HashTable<string, Variant> properties)
     {