[gtksourceview] docs: document the 'path' context class

[Sébastien Wilmet <swilmet src gnome org>]

commit eab9d4f216688ceba0a9134f638844b952e3dd4a
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sun May 10 15:28:03 2015 +0200

    docs: document the 'path' context class
    
    And sort the context classes in alphabetical order.

 gtksourceview/gtksourcebuffer.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/gtksourceview/gtksourcebuffer.c b/gtksourceview/gtksourcebuffer.c
index f69f89b..b97a06d 100644
--- a/gtksourceview/gtksourcebuffer.c
+++ b/gtksourceview/gtksourcebuffer.c
@@ -100,8 +100,9 @@
  * engine. There are currently three default context classes that are
  * applied to regions of a #GtkSourceBuffer:
  *  - <emphasis>comment</emphasis>: the region delimits a comment;
- *  - <emphasis>string</emphasis>: the region delimits a string;
- *  - <emphasis>no-spell-check</emphasis>: the region should not be spell checked.
+ *  - <emphasis>no-spell-check</emphasis>: the region should not be spell checked;
+ *  - <emphasis>path</emphasis>: the region delimits a path to a file;
+ *  - <emphasis>string</emphasis>: the region delimits a string.
  *
  * Custom language definition files can create their own context classes,
  * since the functions like gtk_source_buffer_iter_has_context_class() take