[gtk-doc] Fixed typo in string

[Daniel Mustieles García <dmustieles src gnome org>]

commit 8ed7ba9e832fd1e7aa6d4bec0ddda34fc5915af4
Author: Daniel Mustieles <daniel mustieles gmail com>
Date:   Mon Feb 10 11:52:42 2014 +0100

    Fixed typo in string

 help/manual/C/index.docbook |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/help/manual/C/index.docbook b/help/manual/C/index.docbook
index c67e98d..ead063d 100644
--- a/help/manual/C/index.docbook
+++ b/help/manual/C/index.docbook
@@ -856,7 +856,7 @@ gtkdoc-fixxref --module=$(DOC_MODULE) --module-dir=html
       </para>
       
       <para>
-        More examples of what markdown tags are supproted can be found in the 
+        More examples of what markdown tags are supported can be found in the 
         <ulink url="http://git.gnome.org/browse/gtk-doc/tree/tests";>gtk-doc test suite</ulink>.
       </para>