[cogl] doc: Use <ulink> to make Gimbal Lock reactive

[Damien Lespiau <dlespiau src gnome org>]

commit 6988d3ae61ab16fb298b34d2bd31860833f04186
Author: Damien Lespiau <damien lespiau intel com>
Date:   Sun Dec 30 20:04:31 2012 +0000

    doc: Use <ulink> to make Gimbal Lock reactive
    
    Instead of just having the reference at the end of the paragraph.
    Usually seen as more usable.

 cogl/cogl-quaternion.h |    8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)
---
diff --git a/cogl/cogl-quaternion.h b/cogl/cogl-quaternion.h
index a383b4f..38e8e16 100644
--- a/cogl/cogl-quaternion.h
+++ b/cogl/cogl-quaternion.h
@@ -45,9 +45,11 @@ COGL_BEGIN_DECLS
  * rotations and have some nice properties when compared with other
  * representation such as (roll,pitch,yaw) Euler angles. They can be
  * used to interpolate between different rotations and they don't
- * suffer from a problem called "Gimbal lock" where two of the axis of
- * rotation may become aligned and you loose a degree of freedom.
- * (<ulink url="http://en.wikipedia.org/wiki/Gimbal_lock"/>).
+ * suffer from a problem called
+ * <ulink url="http://en.wikipedia.org/wiki/Gimbal_lock";>"Gimbal lock"</ulink>
+ * where two of the axis of rotation may become aligned and you loose a
+ * degree of freedom.
+ * .
  */
 #include <cogl/cogl-vector.h>
 #include <cogl/cogl-euler.h>